diff --git a/docs/installation.md b/docs/installation.md
index 7f870e225..0049a9323 100644
--- a/docs/installation.md
+++ b/docs/installation.md
@@ -463,7 +463,7 @@ vendor-defined limits, and a paid license is optional. REA reuses any detected
 installation and preserves Hopper during uninstall.
 
 The supported native host baseline is macOS 12+, Ubuntu 24.04+, Fedora 41+,
-Nobara 44+, 64-bit Arch Linux, or CachyOS. Ghidra and IDA have their own provider-specific
+Nobara 44+, 64-bit Arch Linux, CachyOS, or Omarchy. Ghidra and IDA have their own provider-specific
 host requirements; Windows Ghidra uses the [experimental P0 boundary](windows-ghidra-p0.md).
 
 On macOS, approved setup downloads the official DMG, checks its published size
diff --git a/src/application/Doctor.test.ts b/src/application/Doctor.test.ts
index afc0b5ef1..ebdc94f43 100644
--- a/src/application/Doctor.test.ts
+++ b/src/application/Doctor.test.ts
@@ -22,7 +22,7 @@ describe("doctor", () => {
       ),
     ).toEqual({
       node: `Install ${SUPPORTED_NODE_VERSION_PROSE}.`,
-      host: "REA supports macOS 12+, Ubuntu 24.04+, Fedora 41+, Nobara 44+, 64-bit Arch Linux, CachyOS, and the experimental Windows x64 Ghidra P0 boundary.",
+      host: "REA supports macOS 12+, Ubuntu 24.04+, Fedora 41+, Nobara 44+, 64-bit Arch Linux, CachyOS, Omarchy, and the experimental Windows x64 Ghidra P0 boundary.",
       hopper: "Run rea setup to install Hopper, or set HOPPER_LAUNCHER_PATH.",
       target: "Supply a readable local app or program path.",
     });
diff --git a/src/application/DoctorDiagnostics.ts b/src/application/DoctorDiagnostics.ts
index 39d838fde..d8b4379cc 100644
--- a/src/application/DoctorDiagnostics.ts
+++ b/src/application/DoctorDiagnostics.ts
@@ -113,7 +113,7 @@ const hostCheck = async (host: DoctorHost): Promise<DoctorCheck> => {
       : `${linuxDistribution.id} ${linuxDistribution.versionId ?? "unknown"}`);
   return check("host", supported, detail, {
     remediation:
-      "REA supports macOS 12+, Ubuntu 24.04+, Fedora 41+, Nobara 44+, 64-bit Arch Linux, CachyOS, and the experimental Windows x64 Ghidra P0 boundary.",
+      "REA supports macOS 12+, Ubuntu 24.04+, Fedora 41+, Nobara 44+, 64-bit Arch Linux, CachyOS, Omarchy, and the experimental Windows x64 Ghidra P0 boundary.",
     classification: "unsupported_host",
   });
 };
diff --git a/src/application/LinuxHopper.test.ts b/src/application/LinuxHopper.test.ts
index e3e0091b3..b5cf2d38f 100644
--- a/src/application/LinuxHopper.test.ts
+++ b/src/application/LinuxHopper.test.ts
@@ -60,12 +60,16 @@ describe("Linux Hopper host classification", () => {
     ['ID=nobara\nVERSION_ID="44"\nID_LIKE="rhel centos fedora"\n', "rpm"],
     ["ID=arch\n", "arch"],
     ["ID=cachyos\nID_LIKE=arch\n", "arch"],
-  ] as const)("accepts an official Hopper distribution", (document, family) => {
-    expect(parseLinuxDistribution(document)).toMatchObject({
-      packageFamily: family,
-      supported: true,
-    });
-  });
+    ['ID=omarchy\nID_LIKE=arch\nVERSION_ID="4.0.4"\n', "arch"],
+  ] as const)(
+    "accepts an explicitly supported distribution",
+    (document, family) => {
+      expect(parseLinuxDistribution(document)).toMatchObject({
+        packageFamily: family,
+        supported: true,
+      });
+    },
+  );
 
   it("detects unresolved or loader-reported shared libraries", () => {
     expect(
@@ -93,6 +97,8 @@ describe("Linux Hopper host classification", () => {
     'ID=debian\nVERSION_ID="13"\nID_LIKE=debian\n',
     "ID=manjaro\nID_LIKE=arch\n",
     "ID=garuda\nID_LIKE=arch\n",
+    "ID=omarchy\n",
+    "ID=omarchy\nID_LIKE=debian\n",
   ])("rejects unsupported vendor/version combinations", (document) => {
     expect(parseLinuxDistribution(document).supported).toBe(false);
   });
diff --git a/src/application/LinuxHopper.ts b/src/application/LinuxHopper.ts
index 3d1658287..3a46106bb 100644
--- a/src/application/LinuxHopper.ts
+++ b/src/application/LinuxHopper.ts
@@ -154,6 +154,7 @@ export const parseLinuxDistribution = (text: string): LinuxDistribution => {
     packageFamily !== undefined &&
     (id === "arch" ||
       id === "cachyos" ||
+      (id === "omarchy" && packageFamily === "arch") ||
       (id === "ubuntu" && versionAtLeast(versionId, 24)) ||
       (id === "fedora" && versionAtLeast(versionId, 41)) ||
       (id === "nobara" && versionAtLeast(versionId, 44)));
diff --git a/src/application/Setup.recovery.test.ts b/src/application/Setup.recovery.test.ts
index cef20ccec..ab480337a 100644
--- a/src/application/Setup.recovery.test.ts
+++ b/src/application/Setup.recovery.test.ts
@@ -267,7 +267,7 @@ describe("setup scoped readiness", () => {
     expect(result.status).toBe("needs_human");
     expect(host.hopperInstalls).toBe(0);
     expect(result.remediation).toBe(
-      "Automated Hopper setup supports Ubuntu 24.04+, Fedora 41+, Nobara 44+, 64-bit Arch Linux, and CachyOS; configure an existing supported provider instead.",
+      "Automated Hopper setup supports Ubuntu 24.04+, Fedora 41+, Nobara 44+, 64-bit Arch Linux, CachyOS, and Omarchy; configure an existing supported provider instead.",
     );
   });
 
diff --git a/src/application/SetupHost.ts b/src/application/SetupHost.ts
index fe2718dc9..de13be596 100644
--- a/src/application/SetupHost.ts
+++ b/src/application/SetupHost.ts
@@ -90,7 +90,7 @@ export const hostRemediation = async (
       : undefined;
   }
   if ((await host.linuxDistribution())?.supported === true) return undefined;
-  return "Automated Hopper setup supports Ubuntu 24.04+, Fedora 41+, Nobara 44+, 64-bit Arch Linux, and CachyOS; configure an existing supported provider instead.";
+  return "Automated Hopper setup supports Ubuntu 24.04+, Fedora 41+, Nobara 44+, 64-bit Arch Linux, CachyOS, and Omarchy; configure an existing supported provider instead.";
 };
 
 /** Production setup effects for Hopper, agent configuration, and the canonical skill directory. */