diff --git a/schema/Dockerfile.test b/schema/Dockerfile.test
index 9d30a6ba7..50edfffd9 100644
--- a/schema/Dockerfile.test
+++ b/schema/Dockerfile.test
@@ -19,6 +19,6 @@ USER owasp
 COPY poetry.lock pyproject.toml ./
 RUN poetry install --no-root
 
-COPY project.json project.json
+COPY *.json ./
 COPY tests tests
 COPY utils utils
diff --git a/schema/chapter.json b/schema/chapter.json
new file mode 100644
index 000000000..18c4446c3
--- /dev/null
+++ b/schema/chapter.json
@@ -0,0 +1,140 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "$id": "https://raw.githubusercontent.com/OWASP/Nest/main/schema/chapter.json",
+  "$defs": {
+    "leader": {
+      "type": "object",
+      "title": "Leader",
+      "description": "A chapter leader.",
+      "required": ["github"],
+      "properties": {
+        "email": {
+          "description": "The leader's email address.",
+          "format": "email",
+          "type": ["string", "null"]
+        },
+        "github": {
+          "type": "string",
+          "description": "The GitHub username.",
+          "pattern": "^[a-zA-Z0-9-]{1,39}$"
+        },
+        "name": {
+          "type": ["string", "null"],
+          "description": "Leader's name."
+        },
+        "slack": {
+          "type": ["string", "null"],
+          "description": "The Slack username.",
+          "pattern": "^[a-zA-Z0-9._-]{1,21}$"
+        }
+      },
+      "additionalProperties": false
+    },
+    "sponsor": {
+      "type": "object",
+      "title": "Sponsor",
+      "description": "A chapter sponsor.",
+      "required": [
+        "name",
+        "url"
+      ],
+      "properties": {
+        "description": {
+          "type": "string",
+          "description": "A brief description of the sponsor."
+        },
+        "logo": {
+          "type": "string",
+          "description": "The URL of the sponsor's logo.",
+          "format": "uri"
+        },
+        "name": {
+          "type": "string",
+          "description": "The name of the sponsor or organization."
+        },
+        "url": {
+          "type": "string",
+          "description": "The URL of the sponsor.",
+          "format": "uri"
+        }
+      },
+      "additionalProperties": false
+    }
+  },
+
+  "additionalProperties": false,
+  "description": "OWASP chapter schema.",
+  "properties": {
+    "blog": {
+      "description": "Chapter's blog.",
+      "format": "uri",
+      "type": ["string"]
+    },
+    "country": {
+      "description": "Country.",
+      "type": "string"
+    },
+    "events": {
+      "description": "Event URLs related to the chapter.",
+      "type": "array",
+      "items": {
+        "format": "uri",
+        "type": "string"
+      },
+      "minItems": 1,
+      "uniqueItems": true
+    },
+    "leaders": {
+      "description": "Leaders of the chapter.",
+      "type": "array",
+      "items": {
+        "$ref": "#/$defs/leader"
+      },
+      "minItems": 2,
+      "uniqueItems": true
+    },
+    "meetup-group": {
+      "description": "Meetup group.",
+      "type": "string"
+    },
+    "name": {
+      "description": "The unique name of the chapter.",
+      "minLength": 10,
+      "type": "string"
+    },
+    "region": {
+      "description": "Region.",
+      "type": "string"
+    },
+    "sponsors": {
+      "description": "Sponsors of the chapter.",
+      "type": "array",
+      "items": {
+        "$ref": "#/$defs/sponsor"
+      },
+      "minItems": 1
+    },
+    "tags": {
+      "description": "Tags for the chapter",
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 3,
+      "uniqueItems": true
+    },
+    "website": {
+      "description": "The official website of the chapter.",
+      "type": "string",
+      "format": "url"
+    }
+  },
+  "required": [
+    "country",
+    "leaders",
+    "name",
+    "tags"
+  ],
+  "title": "OWASP Chapter",
+  "type": "object"
+}
diff --git a/schema/tests/chapter_test.py b/schema/tests/chapter_test.py
new file mode 100644
index 000000000..7395aa839
--- /dev/null
+++ b/schema/tests/chapter_test.py
@@ -0,0 +1,57 @@
+from pathlib import Path
+
+import pytest
+import yaml
+from utils.validators import validate_data
+
+from tests.conftest import tests_data_dir
+
+
+def test_positive(chapter_schema):
+    for file_path in Path(tests_data_dir / "chapter/positive").rglob("*.yaml"):
+        assert (
+            validate_data(
+                chapter_schema,
+                yaml.safe_load(
+                    file_path.read_text(),
+                ),
+            )
+            is None
+        )
+
+
+@pytest.mark.parametrize(
+    ("file_path", "error_message"),
+    [
+        ("blog-none.yaml", "None is not of type 'string'"),
+        ("events-empty.yaml", "[] should be non-empty"),
+        (
+            "events-non-unique-urls.yaml",
+            "['https://example.com/event1', 'https://example.com/event1'] has non-unique elements",
+        ),
+        (
+            "leader-email-empty.yaml",
+            "[{'email': '', 'github': 'leader-1-github', 'name': 'Leader 1 Name'}] is too short",
+        ),
+        (
+            "leader-email-missing.yaml",
+            "[{'email': None, 'github': 'leader-1-github', 'name': 'Leader 1 Name'}] is too short",
+        ),
+        ("name-empty.yaml", "'' is too short"),
+        ("name-none.yaml", "None is not of type 'string'"),
+        ("sponsors-empty-list.yaml", "[] should be non-empty"),
+        ("sponsors-name-missing.yaml", "'name' is a required property"),
+        ("sponsors-url-missing.yaml", "'url' is a required property"),
+        ("website-none.yaml", "None is not of type 'string'"),
+    ],
+)
+def test_negative(chapter_schema, file_path, error_message):
+    assert (
+        validate_data(
+            chapter_schema,
+            yaml.safe_load(
+                Path(tests_data_dir / "chapter/negative" / file_path).read_text(),
+            ),
+        )
+        == error_message
+    )
diff --git a/schema/tests/conftest.py b/schema/tests/conftest.py
index 062478b14..39df8b773 100644
--- a/schema/tests/conftest.py
+++ b/schema/tests/conftest.py
@@ -8,6 +8,12 @@
 schema_dir = tests_dir.parent
 
 
+@pytest.fixture
+def chapter_schema():
+    with Path(schema_dir / "chapter.json").open() as file:
+        yield json.load(file)
+
+
 @pytest.fixture
 def project_schema():
     with Path(schema_dir / "project.json").open() as file:
diff --git a/schema/tests/data/chapter/negative/blog-none.yaml b/schema/tests/data/chapter/negative/blog-none.yaml
new file mode 100644
index 000000000..7eafe3041
--- /dev/null
+++ b/schema/tests/data/chapter/negative/blog-none.yaml
@@ -0,0 +1,12 @@
+blog:
+country: India
+leaders:
+  - github: leader-1-github
+    name: Leader 1 Name
+  - github: leader-2-github
+    name: Leader 2 Name
+name: OWASP Chapter
+tags:
+  - example-tag-1
+  - example-tag-2
+  - example-tag-3
diff --git a/schema/tests/data/chapter/negative/events-empty.yaml b/schema/tests/data/chapter/negative/events-empty.yaml
new file mode 100644
index 000000000..4e2ac788f
--- /dev/null
+++ b/schema/tests/data/chapter/negative/events-empty.yaml
@@ -0,0 +1,13 @@
+country: India
+leaders:
+  - github: leader-1-github
+    name: Leader 1 Name
+  - github: leader-2-github
+    name: Leader 2 Name
+    slack: leader-2-slack
+name: OWASP Chapter
+tags:
+  - example-tag-1
+  - example-tag-2
+  - example-tag-3
+events: []
diff --git a/schema/tests/data/chapter/negative/events-non-unique-urls.yaml b/schema/tests/data/chapter/negative/events-non-unique-urls.yaml
new file mode 100644
index 000000000..b8218cc23
--- /dev/null
+++ b/schema/tests/data/chapter/negative/events-non-unique-urls.yaml
@@ -0,0 +1,15 @@
+country: India
+leaders:
+  - github: leader-1-github
+    name: Leader 1 Name
+  - github: leader-2-github
+    name: Leader 2 Name
+    slack: leader-2-slack
+name: OWASP Chapter
+tags:
+  - example-tag-1
+  - example-tag-2
+  - example-tag-3
+events:
+  - https://example.com/event1
+  - https://example.com/event1
diff --git a/schema/tests/data/chapter/negative/leader-email-empty.yaml b/schema/tests/data/chapter/negative/leader-email-empty.yaml
new file mode 100644
index 000000000..10b2f6fea
--- /dev/null
+++ b/schema/tests/data/chapter/negative/leader-email-empty.yaml
@@ -0,0 +1,10 @@
+country: India
+leaders:
+  - email: ''
+    github: leader-1-github
+    name: Leader 1 Name
+name: OWASP Chapter
+tags:
+  - example-tag-1
+  - example-tag-2
+  - example-tag-3
diff --git a/schema/tests/data/chapter/negative/leader-email-missing.yaml b/schema/tests/data/chapter/negative/leader-email-missing.yaml
new file mode 100644
index 000000000..a982b4ae8
--- /dev/null
+++ b/schema/tests/data/chapter/negative/leader-email-missing.yaml
@@ -0,0 +1,10 @@
+country: India
+leaders:
+  - email:
+    github: leader-1-github
+    name: Leader 1 Name
+name: OWASP Chapter
+tags:
+  - example-tag-1
+  - example-tag-2
+  - example-tag-3
diff --git a/schema/tests/data/chapter/negative/name-empty.yaml b/schema/tests/data/chapter/negative/name-empty.yaml
new file mode 100644
index 000000000..0e90112fa
--- /dev/null
+++ b/schema/tests/data/chapter/negative/name-empty.yaml
@@ -0,0 +1,11 @@
+country: India
+leaders:
+  - github: leader-name-1
+    name: Leader Name 1
+  - github: leader-name-2
+    name: Leader Name 2
+name: ''
+tags:
+  - example-tag-1
+  - example-tag-2
+  - example-tag-3
diff --git a/schema/tests/data/chapter/negative/name-none.yaml b/schema/tests/data/chapter/negative/name-none.yaml
new file mode 100644
index 000000000..242c08e3b
--- /dev/null
+++ b/schema/tests/data/chapter/negative/name-none.yaml
@@ -0,0 +1,11 @@
+country: India
+leaders:
+  - github: leader-name-1
+    name: Leader Name 1
+  - github: leader-name-2
+    name: Leader Name 2
+name:
+tags:
+  - example-tag-1
+  - example-tag-2
+  - example-tag-3
diff --git a/schema/tests/data/chapter/negative/sponsors-empty-list.yaml b/schema/tests/data/chapter/negative/sponsors-empty-list.yaml
new file mode 100644
index 000000000..1aa848e88
--- /dev/null
+++ b/schema/tests/data/chapter/negative/sponsors-empty-list.yaml
@@ -0,0 +1,12 @@
+country: India
+leaders:
+  - github: leader-1-github
+    name: Leader 1 Name
+  - github: leader-2-github
+    name: Leader 2 Name
+name: OWASP Chapter
+tags:
+  - example-tag-1
+  - example-tag-2
+  - example-tag-3
+sponsors: []
diff --git a/schema/tests/data/chapter/negative/sponsors-name-missing.yaml b/schema/tests/data/chapter/negative/sponsors-name-missing.yaml
new file mode 100644
index 000000000..824ee980a
--- /dev/null
+++ b/schema/tests/data/chapter/negative/sponsors-name-missing.yaml
@@ -0,0 +1,15 @@
+country: India
+leaders:
+  - github: leader-name-1
+    name: Leader Name 1
+  - github: leader-name-2
+    name: Leader Name 2
+name: OWASP Chapter
+tags:
+  - example-tag-1
+  - example-tag-2
+  - example-tag-3
+sponsors:
+  - description: A great sponsor
+    logo: https://sponsor1.com/logo.png
+    url: https://sponsor1.com
diff --git a/schema/tests/data/chapter/negative/sponsors-url-missing.yaml b/schema/tests/data/chapter/negative/sponsors-url-missing.yaml
new file mode 100644
index 000000000..79b98facc
--- /dev/null
+++ b/schema/tests/data/chapter/negative/sponsors-url-missing.yaml
@@ -0,0 +1,15 @@
+country: India
+leaders:
+  - github: leader-1-github
+    name: Leader 1 Name
+  - github: leader-2-github
+    name: Leader 2 Name
+name: OWASP Chapter
+tags:
+  - example-tag-1
+  - example-tag-2
+  - example-tag-3
+sponsors:
+  - description: A great sponsor
+    logo: https://sponsor1.com/logo.png
+    name: Sponsor 1
diff --git a/schema/tests/data/chapter/negative/website-none.yaml b/schema/tests/data/chapter/negative/website-none.yaml
new file mode 100644
index 000000000..f9fa2a1c0
--- /dev/null
+++ b/schema/tests/data/chapter/negative/website-none.yaml
@@ -0,0 +1,8 @@
+country: India
+leaders:
+  - github: leader-1-github
+    name: Leader 1 Name
+name: OWASP Chapter
+tags:
+  - example-tag-1
+website:
diff --git a/schema/tests/data/chapter/positive/optional-properties.yaml b/schema/tests/data/chapter/positive/optional-properties.yaml
new file mode 100644
index 000000000..35ddd3f3c
--- /dev/null
+++ b/schema/tests/data/chapter/positive/optional-properties.yaml
@@ -0,0 +1,17 @@
+blog: https://blog.chapter.com
+country: India
+events:
+  - https://example.com/event1
+  - https://example.com/event2
+leaders:
+  - github: leader-1-github
+    name: Leader 1 Name
+  - github: leader-2-github
+    name: Leader 2 Name
+    slack: leader-2-slack
+name: OWASP Chapter
+tags:
+  - example-tag-1
+  - example-tag-2
+  - example-tag-3
+website: https://chapter-website.com
diff --git a/schema/tests/data/chapter/positive/required-properties.yaml b/schema/tests/data/chapter/positive/required-properties.yaml
new file mode 100644
index 000000000..f128a1877
--- /dev/null
+++ b/schema/tests/data/chapter/positive/required-properties.yaml
@@ -0,0 +1,12 @@
+country: India
+leaders:
+  - github: leader-1-github
+    name: Leader 1 Name
+  - github: leader-2-github
+    name: Leader 2 Name
+    slack: leader-2-slack
+name: OWASP Chapter
+tags:
+  - chapter-tag-1
+  - chapter-tag-2
+  - chapter-tag-3