diff --git a/.github/ISSUE_TEMPLATE/01-langchain.yml b/.github/ISSUE_TEMPLATE/01-langchain.yml
index 8b3a17dc9..dd620d0f9 100644
--- a/.github/ISSUE_TEMPLATE/01-langchain.yml
+++ b/.github/ISSUE_TEMPLATE/01-langchain.yml
@@ -4,6 +4,11 @@ title: "[langchain]: <Please write a comprehensive title>"
 labels: [langchain]
 
 body:
+  - type: markdown
+    attributes:
+      value: >
+        All contributions must be in English. See the
+        [language policy](https://docs.langchain.com/oss/python/contributing/overview#language-policy).
   - type: dropdown
     attributes:
       label: "Type of issue"
diff --git a/.github/ISSUE_TEMPLATE/02-langgraph.yml b/.github/ISSUE_TEMPLATE/02-langgraph.yml
index d32c435cf..ddf5d58e0 100644
--- a/.github/ISSUE_TEMPLATE/02-langgraph.yml
+++ b/.github/ISSUE_TEMPLATE/02-langgraph.yml
@@ -4,6 +4,11 @@ title: "[langgraph]: <Please write a comprehensive title>"
 labels: [langgraph]
 
 body:
+  - type: markdown
+    attributes:
+      value: >
+        All contributions must be in English. See the
+        [language policy](https://docs.langchain.com/oss/python/contributing/overview#language-policy).
   - type: dropdown
     attributes:
       label: "Type of issue"
diff --git a/.github/ISSUE_TEMPLATE/03-langsmith.yml b/.github/ISSUE_TEMPLATE/03-langsmith.yml
index 56edf57e0..c7253c503 100644
--- a/.github/ISSUE_TEMPLATE/03-langsmith.yml
+++ b/.github/ISSUE_TEMPLATE/03-langsmith.yml
@@ -4,6 +4,11 @@ title: "[langsmith]: <Please write a comprehensive title>"
 labels: [langsmith]
 
 body:
+  - type: markdown
+    attributes:
+      value: >
+        All contributions must be in English. See the
+        [language policy](https://docs.langchain.com/oss/python/contributing/overview#language-policy).
   - type: dropdown
     attributes:
       label: "Type of issue"
diff --git a/.github/ISSUE_TEMPLATE/04-reference-docs.yml b/.github/ISSUE_TEMPLATE/04-reference-docs.yml
index 61b99ff9c..04baaca04 100644
--- a/.github/ISSUE_TEMPLATE/04-reference-docs.yml
+++ b/.github/ISSUE_TEMPLATE/04-reference-docs.yml
@@ -4,6 +4,11 @@ title: "[reference]: <Please write a comprehensive title>"
 labels: [reference]
 
 body:
+  - type: markdown
+    attributes:
+      value: >
+        All contributions must be in English. See the
+        [language policy](https://docs.langchain.com/oss/python/contributing/overview#language-policy).
   - type: dropdown
     attributes:
       label: "Type of issue"
diff --git a/.github/ISSUE_TEMPLATE/05-deepagents.yml b/.github/ISSUE_TEMPLATE/05-deepagents.yml
index c993d13ef..c158bdd82 100644
--- a/.github/ISSUE_TEMPLATE/05-deepagents.yml
+++ b/.github/ISSUE_TEMPLATE/05-deepagents.yml
@@ -4,6 +4,11 @@ title: "[deepagents]: <Please write a comprehensive title>"
 labels: [deepagents]
 
 body:
+  - type: markdown
+    attributes:
+      value: >
+        All contributions must be in English. See the
+        [language policy](https://docs.langchain.com/oss/python/contributing/overview#language-policy).
   - type: dropdown
     attributes:
       label: "Type of issue"
diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
index 4f4be3146..9389fa801 100644
--- a/.github/pull_request_template.md
+++ b/.github/pull_request_template.md
@@ -28,7 +28,7 @@ Examples:
 
 ## Checklist
 <!-- Put an 'x' in all boxes that apply -->
-- [ ] I have read the [contributing guidelines](README.md)
+- [ ] I have read the [contributing guidelines](README.md), including the [language policy](https://docs.langchain.com/oss/python/contributing/overview#language-policy)
 - [ ] I have tested my changes locally using `docs dev`
 - [ ] All code examples have been tested and work correctly
 - [ ] I have used **root relative** paths for internal links