diff --git a/CMakeLists.txt b/CMakeLists.txt
index eeca274e..8a41e1ac 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -324,6 +324,10 @@ set(USBD_LIB src/core/libraries/usbd/usbd.cpp
              src/core/libraries/usbd/usbd.h
 )
 
+set(FIBER_LIB src/core/libraries/fiber/fiber.cpp
+              src/core/libraries/fiber/fiber.h
+)
+
 set(NP_LIBS src/core/libraries/np_manager/np_manager.cpp
             src/core/libraries/np_manager/np_manager.h
             src/core/libraries/np_score/np_score.cpp
@@ -464,6 +468,7 @@ set(CORE src/core/aerolib/stubs.cpp
          ${USBD_LIB}
          ${MISC_LIBS}
          ${DIALOGS_LIB}
+         ${FIBER_LIB}
          ${DEV_TOOLS}
          src/core/debug_state.cpp
          src/core/debug_state.h
diff --git a/src/common/logging/filter.cpp b/src/common/logging/filter.cpp
index c3088f92..2ff2a900 100644
--- a/src/common/logging/filter.cpp
+++ b/src/common/logging/filter.cpp
@@ -114,6 +114,7 @@ bool ParseFilterRule(Filter& instance, Iterator begin, Iterator end) {
     SUB(Lib, AvPlayer)                                                                             \
     SUB(Lib, Ngs2)                                                                                 \
     SUB(Lib, Audio3d)                                                                              \
+    SUB(Lib, Fiber)                                                                                \
     CLS(Frontend)                                                                                  \
     CLS(Render)                                                                                    \
     SUB(Render, Vulkan)                                                                            \
diff --git a/src/common/logging/types.h b/src/common/logging/types.h
index 749568da..54388e59 100644
--- a/src/common/logging/types.h
+++ b/src/common/logging/types.h
@@ -81,6 +81,7 @@ enum class Class : u8 {
     Lib_AvPlayer,       ///< The LibSceAvPlayer implementation.
     Lib_Ngs2,           ///< The LibSceNgs2 implementation.
     Lib_Audio3d,        ///< The LibSceAudio3d implementation.
+    Lib_Fiber,          ///< The LibSceFiber implementation.
     Frontend,           ///< Emulator UI
     Render,             ///< Video Core
     Render_Vulkan,      ///< Vulkan backend
diff --git a/src/core/libraries/error_codes.h b/src/core/libraries/error_codes.h
index b9896b6c..041870ed 100644
--- a/src/core/libraries/error_codes.h
+++ b/src/core/libraries/error_codes.h
@@ -498,4 +498,12 @@ constexpr int ORBIS_AVPLAYER_ERROR_INFO_OTHER_ENCRY = 0x806A00BF;
 // AppContent library
 constexpr int ORBIS_APP_CONTENT_ERROR_PARAMETER = 0x80D90002;
 constexpr int ORBIS_APP_CONTENT_ERROR_DRM_NO_ENTITLEMENT = 0x80D90007;
-constexpr int ORBIS_APP_CONTENT_ERROR_NOT_FOUND = 0x80D90005;
\ No newline at end of file
+constexpr int ORBIS_APP_CONTENT_ERROR_NOT_FOUND = 0x80D90005;
+
+// Fiber library
+constexpr int ORBIS_FIBER_ERROR_NULL = 0x80590001;
+constexpr int ORBIS_FIBER_ERROR_ALIGNMENT = 0x80590002;
+constexpr int ORBIS_FIBER_ERROR_RANGE = 0x80590003;
+constexpr int ORBIS_FIBER_ERROR_INVALID = 0x80590004;
+constexpr int ORBIS_FIBER_ERROR_PERMISSION = 0x80590005;
+constexpr int ORBIS_FIBER_ERROR_STATE = 0x80590006;
\ No newline at end of file
diff --git a/src/core/libraries/fiber/fiber.cpp b/src/core/libraries/fiber/fiber.cpp
new file mode 100644
index 00000000..bd1575dd
--- /dev/null
+++ b/src/core/libraries/fiber/fiber.cpp
@@ -0,0 +1,284 @@
+// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "fiber.h"
+
+#include "common/logging/log.h"
+#include "common/singleton.h"
+#include "core/libraries/error_codes.h"
+#include "core/libraries/libs.h"
+#include "core/linker.h"
+
+#ifdef _WIN64
+#include <windows.h>
+#endif
+
+namespace Libraries::Fiber {
+
+constexpr static u64 kFiberSignature = 0x054ad954;
+
+thread_local SceFiber* gCurrentFiber = nullptr;
+thread_local void* gFiberThread = nullptr;
+
+void FiberEntry(void* param) {
+    SceFiber* fiber = static_cast<SceFiber*>(param);
+    u64 argRun = 0;
+    u64 argRet = 0;
+
+    gCurrentFiber = fiber;
+
+    if (fiber->pArgRun != nullptr) {
+        argRun = *fiber->pArgRun;
+    }
+
+    const auto* linker = Common::Singleton<Core::Linker>::Instance();
+    linker->ExecuteGuest(fiber->entry, fiber->argOnInitialize, argRun);
+
+    UNREACHABLE();
+}
+
+s32 PS4_SYSV_ABI sceFiberInitialize(SceFiber* fiber, const char* name, SceFiberEntry entry,
+                                    u64 argOnInitialize, void* addrContext, u64 sizeContext,
+                                    const SceFiberOptParam* optParam) {
+    LOG_INFO(Lib_Fiber, "called: name = {}", name);
+
+    if (!fiber || !name || !entry) {
+        return ORBIS_FIBER_ERROR_NULL;
+    }
+
+    fiber->signature = kFiberSignature;
+
+    fiber->entry = entry;
+    fiber->argOnInitialize = argOnInitialize;
+
+    fiber->argRun = 0;
+    fiber->pArgRun = &fiber->argRun;
+    fiber->argReturn = 0;
+    fiber->pArgReturn = &fiber->argReturn;
+
+    fiber->sizeContext = sizeContext;
+
+    fiber->state = FiberState::Init;
+#ifdef _WIN64
+    fiber->handle = CreateFiber(sizeContext, FiberEntry, fiber);
+#else
+    UNREACHABLE_MSG("Missing implementation");
+#endif
+    strncpy(fiber->name, name, ORBIS_FIBER_MAX_NAME_LENGTH);
+
+    return ORBIS_OK;
+}
+
+s32 PS4_SYSV_ABI sceFiberOptParamInitialize(SceFiberOptParam* optParam) {
+    LOG_ERROR(Lib_Fiber, "called");
+
+    if (!optParam) {
+        return ORBIS_FIBER_ERROR_NULL;
+    }
+
+    return ORBIS_OK;
+}
+
+s32 PS4_SYSV_ABI sceFiberFinalize(SceFiber* fiber) {
+    LOG_TRACE(Lib_Fiber, "called");
+
+    if (!fiber) {
+        return ORBIS_FIBER_ERROR_NULL;
+    }
+    if ((u64)fiber % 8 != 0) {
+        return ORBIS_FIBER_ERROR_ALIGNMENT;
+    }
+    if (fiber->signature != kFiberSignature) {
+        return ORBIS_FIBER_ERROR_INVALID;
+    }
+    if (fiber->state != FiberState::Run) {
+        return ORBIS_FIBER_ERROR_STATE;
+    }
+
+    fiber->signature = 0;
+    fiber->state = FiberState::None;
+
+#ifdef _WIN64
+    DeleteFiber(fiber->handle);
+#else
+    UNREACHABLE_MSG("Missing implementation");
+#endif
+    return ORBIS_OK;
+}
+
+s32 PS4_SYSV_ABI sceFiberRun(SceFiber* fiber, u64 argOnRunTo, u64* argOnReturn) {
+    LOG_TRACE(Lib_Fiber, "called");
+
+    if (!fiber) {
+        return ORBIS_FIBER_ERROR_NULL;
+    }
+    if ((u64)fiber % 8 != 0) {
+        return ORBIS_FIBER_ERROR_ALIGNMENT;
+    }
+    if (fiber->signature != kFiberSignature) {
+        return ORBIS_FIBER_ERROR_INVALID;
+    }
+    if (fiber->state == FiberState::Run) {
+        return ORBIS_FIBER_ERROR_STATE;
+    }
+
+    if (gFiberThread == nullptr) {
+#ifdef _WIN64
+        gFiberThread = ConvertThreadToFiber(nullptr);
+#else
+        UNREACHABLE_MSG("Missing implementation");
+#endif
+    }
+
+    gCurrentFiber = fiber;
+
+    if (fiber->pArgRun != nullptr) {
+        *fiber->pArgRun = argOnRunTo;
+    }
+
+    fiber->pArgReturn = argOnReturn;
+    fiber->state = FiberState::Run;
+#ifdef _WIN64
+    SwitchToFiber(fiber->handle);
+#else
+    UNREACHABLE_MSG("Missing implementation");
+#endif
+    return ORBIS_OK;
+}
+
+s32 PS4_SYSV_ABI sceFiberSwitch(SceFiber* fiber, u64 argOnRunTo, u64* argOnRun) {
+    LOG_TRACE(Lib_Fiber, "called");
+
+    if (!fiber) {
+        return ORBIS_FIBER_ERROR_NULL;
+    }
+    if ((u64)fiber % 8 != 0) {
+        return ORBIS_FIBER_ERROR_ALIGNMENT;
+    }
+    if (fiber->signature != kFiberSignature) {
+        return ORBIS_FIBER_ERROR_INVALID;
+    }
+    if (gCurrentFiber == nullptr) {
+        return ORBIS_FIBER_ERROR_PERMISSION;
+    }
+    if (fiber->state == FiberState::Run) {
+        return ORBIS_FIBER_ERROR_STATE;
+    }
+
+    gCurrentFiber->state = FiberState::Suspend;
+
+    // TODO: argOnRun
+
+    *fiber->pArgRun = argOnRunTo;
+    fiber->state = FiberState::Run;
+
+    gCurrentFiber = fiber;
+#ifdef _WIN64
+    SwitchToFiber(fiber->handle);
+#else
+    UNREACHABLE_MSG("Missing implementation");
+#endif
+    return ORBIS_OK;
+}
+
+s32 PS4_SYSV_ABI sceFiberGetSelf(SceFiber** fiber) {
+    LOG_TRACE(Lib_Fiber, "called");
+
+    if (!fiber || !gCurrentFiber) {
+        return ORBIS_FIBER_ERROR_NULL;
+    }
+    if (gCurrentFiber->signature != kFiberSignature) {
+        return ORBIS_FIBER_ERROR_PERMISSION;
+    }
+
+    *fiber = gCurrentFiber;
+    return ORBIS_OK;
+}
+
+s32 PS4_SYSV_ABI sceFiberReturnToThread(u64 argOnReturn, u64* argOnRun) {
+    LOG_TRACE(Lib_Fiber, "called");
+
+    if (gCurrentFiber->signature != kFiberSignature) {
+        return ORBIS_FIBER_ERROR_PERMISSION;
+    }
+
+    if (gCurrentFiber->pArgReturn != nullptr) {
+        *gCurrentFiber->pArgReturn = argOnReturn;
+    }
+
+    // TODO: argOnRun
+    gCurrentFiber->state = FiberState::Suspend;
+    gCurrentFiber = nullptr;
+#ifdef _WIN64
+    SwitchToFiber(gFiberThread);
+#else
+    UNREACHABLE_MSG("Missing implementation");
+#endif
+    return ORBIS_OK;
+}
+
+s32 PS4_SYSV_ABI sceFiberGetInfo(SceFiber* fiber, SceFiberInfo* fiberInfo) {
+    LOG_INFO(Lib_Fiber, "called");
+
+    if (!fiber || !fiberInfo) {
+        return ORBIS_FIBER_ERROR_NULL;
+    }
+
+    fiberInfo->entry = fiber->entry;
+    fiberInfo->argOnInitialize = fiber->argOnInitialize;
+    fiberInfo->addrContext = nullptr;
+    fiberInfo->sizeContext = fiber->sizeContext;
+    fiberInfo->sizeContextMargin = 0;
+
+    strncpy(fiberInfo->name, fiber->name, ORBIS_FIBER_MAX_NAME_LENGTH);
+    return ORBIS_OK;
+}
+
+s32 PS4_SYSV_ABI sceFiberStartContextSizeCheck(u32 flags) {
+    LOG_ERROR(Lib_Fiber, "called");
+
+    if (flags != 0) {
+        return ORBIS_FIBER_ERROR_INVALID;
+    }
+
+    return ORBIS_OK;
+}
+
+s32 PS4_SYSV_ABI sceFiberStopContextSizeCheck() {
+    LOG_ERROR(Lib_Fiber, "called");
+    return ORBIS_OK;
+}
+
+s32 PS4_SYSV_ABI sceFiberRename(SceFiber* fiber, const char* name) {
+    LOG_INFO(Lib_Fiber, "called, name = {}", name);
+
+    if (!fiber || !name) {
+        return ORBIS_FIBER_ERROR_NULL;
+    }
+    if ((u64)fiber % 8 != 0) {
+        return ORBIS_FIBER_ERROR_ALIGNMENT;
+    }
+
+    strncpy(fiber->name, name, ORBIS_FIBER_MAX_NAME_LENGTH);
+    return ORBIS_OK;
+}
+
+void RegisterlibSceFiber(Core::Loader::SymbolsResolver* sym) {
+    LIB_FUNCTION("hVYD7Ou2pCQ", "libSceFiber", 1, "libSceFiber", 1, 1, sceFiberInitialize);
+    LIB_FUNCTION("asjUJJ+aa8s", "libSceFiber", 1, "libSceFiber", 1, 1, sceFiberOptParamInitialize);
+    LIB_FUNCTION("JeNX5F-NzQU", "libSceFiber", 1, "libSceFiber", 1, 1, sceFiberFinalize);
+
+    LIB_FUNCTION("a0LLrZWac0M", "libSceFiber", 1, "libSceFiber", 1, 1, sceFiberRun);
+    LIB_FUNCTION("PFT2S-tJ7Uk", "libSceFiber", 1, "libSceFiber", 1, 1, sceFiberSwitch);
+    LIB_FUNCTION("p+zLIOg27zU", "libSceFiber", 1, "libSceFiber", 1, 1, sceFiberGetSelf);
+    LIB_FUNCTION("B0ZX2hx9DMw", "libSceFiber", 1, "libSceFiber", 1, 1, sceFiberReturnToThread);
+
+    LIB_FUNCTION("uq2Y5BFz0PE", "libSceFiber", 1, "libSceFiber", 1, 1, sceFiberGetInfo);
+    LIB_FUNCTION("Lcqty+QNWFc", "libSceFiber", 1, "libSceFiber", 1, 1,
+                 sceFiberStartContextSizeCheck);
+    LIB_FUNCTION("Kj4nXMpnM8Y", "libSceFiber", 1, "libSceFiber", 1, 1,
+                 sceFiberStopContextSizeCheck);
+    LIB_FUNCTION("JzyT91ucGDc", "libSceFiber", 1, "libSceFiber", 1, 1, sceFiberRename);
+}
+
+} // namespace Libraries::Fiber
\ No newline at end of file
diff --git a/src/core/libraries/fiber/fiber.h b/src/core/libraries/fiber/fiber.h
new file mode 100644
index 00000000..930409ca
--- /dev/null
+++ b/src/core/libraries/fiber/fiber.h
@@ -0,0 +1,83 @@
+// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "common/assert.h"
+#include "common/types.h"
+
+namespace Core::Loader {
+class SymbolsResolver;
+}
+namespace Libraries::Fiber {
+
+#define ORBIS_FIBER_MAX_NAME_LENGTH (31)
+
+typedef void PS4_SYSV_ABI (*SceFiberEntry)(u64 argOnInitialize, u64 argOnRun);
+
+enum FiberState : u32 {
+    None = 0u,
+    Init = 1u,
+    Run = 2u,
+    Suspend = 3u,
+};
+
+struct SceFiber {
+    u64 signature;
+    FiberState state;
+    SceFiberEntry entry;
+
+    u64 argOnInitialize;
+
+    u64 argRun;
+    u64* pArgRun;
+
+    u64 argReturn;
+    u64* pArgReturn;
+
+    u64 sizeContext;
+
+    char name[ORBIS_FIBER_MAX_NAME_LENGTH];
+    void* handle;
+};
+static_assert(sizeof(SceFiber) <= 256);
+
+struct SceFiberInfo {
+    u64 size;
+    SceFiberEntry entry;
+    u64 argOnInitialize;
+    void* addrContext;
+    u64 sizeContext;
+    char name[ORBIS_FIBER_MAX_NAME_LENGTH + 1];
+    u64 sizeContextMargin;
+};
+static_assert(sizeof(SceFiberInfo) <= 128);
+
+typedef void* SceFiberOptParam;
+
+s32 PS4_SYSV_ABI sceFiberInitialize(SceFiber* fiber, const char* name, SceFiberEntry entry,
+                                    u64 argOnInitialize, void* addrContext, u64 sizeContext,
+                                    const SceFiberOptParam* optParam);
+
+s32 PS4_SYSV_ABI sceFiberOptParamInitialize(SceFiberOptParam* optParam);
+
+s32 PS4_SYSV_ABI sceFiberFinalize(SceFiber* fiber);
+
+s32 PS4_SYSV_ABI sceFiberRun(SceFiber* fiber, u64 argOnRunTo, u64* argOnReturn);
+
+s32 PS4_SYSV_ABI sceFiberSwitch(SceFiber* fiber, u64 argOnRunTo, u64* argOnRun);
+
+s32 PS4_SYSV_ABI sceFiberGetSelf(SceFiber** fiber);
+
+s32 PS4_SYSV_ABI sceFiberReturnToThread(u64 argOnReturn, u64* argOnRun);
+
+s32 PS4_SYSV_ABI sceFiberGetInfo(SceFiber* fiber, SceFiberInfo* fiberInfo);
+
+s32 PS4_SYSV_ABI sceFiberStartContextSizeCheck(u32 flags);
+
+s32 PS4_SYSV_ABI sceFiberStopContextSizeCheck(void);
+
+s32 PS4_SYSV_ABI sceFiberRename(SceFiber* fiber, const char* name);
+
+void RegisterlibSceFiber(Core::Loader::SymbolsResolver* sym);
+} // namespace Libraries::Fiber
\ No newline at end of file
diff --git a/src/core/libraries/libs.cpp b/src/core/libraries/libs.cpp
index 5b6c17b1..86f9fcf9 100644
--- a/src/core/libraries/libs.cpp
+++ b/src/core/libraries/libs.cpp
@@ -11,6 +11,7 @@
 #include "core/libraries/dialogs/error_dialog.h"
 #include "core/libraries/dialogs/ime_dialog.h"
 #include "core/libraries/disc_map/disc_map.h"
+#include "core/libraries/fiber/fiber.h"
 #include "core/libraries/gnmdriver/gnmdriver.h"
 #include "core/libraries/kernel/libkernel.h"
 #include "core/libraries/libc_internal/libc_internal.h"
@@ -77,6 +78,7 @@ void InitHLELibs(Core::Loader::SymbolsResolver* sym) {
     Libraries::ImeDialog::RegisterlibSceImeDialog(sym);
     Libraries::AvPlayer::RegisterlibSceAvPlayer(sym);
     Libraries::Audio3d::RegisterlibSceAudio3d(sym);
+    Libraries::Fiber::RegisterlibSceFiber(sym);
 }
 
 } // namespace Libraries
diff --git a/src/emulator.cpp b/src/emulator.cpp
index 9f801fb8..67aaa049 100644
--- a/src/emulator.cpp
+++ b/src/emulator.cpp
@@ -26,6 +26,7 @@
 #include "core/file_format/trp.h"
 #include "core/file_sys/fs.h"
 #include "core/libraries/disc_map/disc_map.h"
+#include "core/libraries/fiber/fiber.h"
 #include "core/libraries/kernel/thread_management.h"
 #include "core/libraries/libc_internal/libc_internal.h"
 #include "core/libraries/libs.h"
@@ -258,7 +259,7 @@ void Emulator::Run(const std::filesystem::path& file) {
 void Emulator::LoadSystemModules(const std::filesystem::path& file) {
     constexpr std::array<SysModules, 13> ModulesToLoad{
         {{"libSceNgs2.sprx", &Libraries::Ngs2::RegisterlibSceNgs2},
-         {"libSceFiber.sprx", nullptr},
+         {"libSceFiber.sprx", &Libraries::Fiber::RegisterlibSceFiber},
          {"libSceUlt.sprx", nullptr},
          {"libSceJson.sprx", nullptr},
          {"libSceJson2.sprx", nullptr},