diff --git a/main.tf b/main.tf
index 8da87eb..e2072ea 100644
--- a/main.tf
+++ b/main.tf
@@ -25,3 +25,6 @@ module "teams" {
   teams = var.teams
 }
 
+module "repositories" {
+  source = "./modules/repositories"
+}
diff --git a/modules/repositories/config.example.yaml b/modules/repositories/config.example.yaml
new file mode 100644
index 0000000..593e2ad
--- /dev/null
+++ b/modules/repositories/config.example.yaml
@@ -0,0 +1,19 @@
+description: "リポジトリの説明文"
+visibility: private        # private / internal / public
+
+topics:
+  - backend
+  - example
+
+has_issues: true
+has_projects: false
+has_wiki: false
+
+allow_merge_commit: false
+allow_squash_merge: true
+allow_rebase_merge: false
+
+required_approving_review_count: 1
+require_code_owner_review: false
+required_status_checks:
+  - "ci"           # GitHub Actionsのjob名 or ステータスチェック名
diff --git a/modules/repositories/github-terraform/config.yaml b/modules/repositories/github-terraform/config.yaml
new file mode 100644
index 0000000..14d47be
--- /dev/null
+++ b/modules/repositories/github-terraform/config.yaml
@@ -0,0 +1,5 @@
+description: "This organization's manage"
+visibility: public
+
+required_status_checks:
+  - "Terraform Plan"
diff --git a/modules/repositories/main.tf b/modules/repositories/main.tf
new file mode 100644
index 0000000..3702f1c
--- /dev/null
+++ b/modules/repositories/main.tf
@@ -0,0 +1,101 @@
+locals {
+  repo_config_files = fileset(path.module, "*/config.yaml")
+
+  repositories = {
+    for f in local.repo_config_files :
+    dirname(f) => yamldecode(file("${path.module}/${f}"))
+  }
+
+  effective_status_checks = {
+    for name, cfg in local.repositories :
+    name => coalesce(lookup(cfg, "required_status_checks", null), [])
+  }
+}
+
+resource "github_repository" "this" {
+  for_each = local.repositories
+
+  name        = each.key
+  description = try(each.value.description, "")
+  visibility  = try(each.value.visibility, "private")
+  topics      = try(each.value.topics, [])
+
+  has_issues   = try(each.value.has_issues, true)
+  has_projects = try(each.value.has_projects, false)
+  has_wiki     = try(each.value.has_wiki, false)
+
+  allow_merge_commit        = try(each.value.allow_merge_commit, false)
+  allow_squash_merge        = try(each.value.allow_squash_merge, true)
+  allow_rebase_merge        = try(each.value.allow_rebase_merge, false)
+  delete_branch_on_merge    = true
+  squash_merge_commit_title = "PR_TITLE"
+
+  auto_init = true
+
+  lifecycle {
+    # 誤ってterraform destroy/apply時にリポジトリごと消えるのを防ぐ
+    prevent_destroy = true
+    ignore_changes = [
+      # README等をauto_init後に手動編集しても差分検知しない
+      auto_init,
+    ]
+  }
+}
+
+resource "github_repository_vulnerability_alerts" "this" {
+  for_each   = local.repositories
+  repository = github_repository.this[each.key].name
+  enabled    = true
+}
+
+resource "github_branch_default" "this" {
+  for_each   = local.repositories
+  repository = github_repository.this[each.key].name
+  branch     = "main"
+}
+
+resource "github_repository_ruleset" "main_protection" {
+  for_each = local.repositories
+
+  name        = "main-protection"
+  repository  = github_repository.this[each.key].name
+  target      = "branch"
+  enforcement = "active"
+
+  conditions {
+    ref_name {
+      include = ["~DEFAULT_BRANCH"]
+      exclude = []
+    }
+  }
+
+  rules {
+    deletion         = true
+    non_fast_forward = true
+
+    pull_request {
+      required_approving_review_count   = try(each.value.required_approving_review_count, 1)
+      dismiss_stale_reviews_on_push     = try(each.value.dismiss_stale_reviews_on_push, true)
+      require_code_owner_review         = try(each.value.require_code_owner_review, false)
+      require_last_push_approval        = try(each.value.require_last_push_approval, false)
+      required_review_thread_resolution = try(each.value.required_review_thread_resolution, true)
+    }
+
+    dynamic "required_status_checks" {
+      for_each = length(local.effective_status_checks[each.key]) > 0 ? [local.effective_status_checks[each.key]] : []
+
+      content {
+        strict_required_status_checks_policy = try(each.value.strict_status_checks, true)
+
+        dynamic "required_check" {
+          for_each = required_status_checks.value
+          content {
+            context = required_check.value
+          }
+        }
+      }
+    }
+  }
+
+  depends_on = [github_branch_default.this]
+}
diff --git a/modules/repositories/setup-cloudflare-tunnel/config.yaml b/modules/repositories/setup-cloudflare-tunnel/config.yaml
new file mode 100644
index 0000000..8e929ca
--- /dev/null
+++ b/modules/repositories/setup-cloudflare-tunnel/config.yaml
@@ -0,0 +1,4 @@
+description: "GitHub Actions Setup Cloudflare Tunnel"
+visibility: public
+
+strict_status_checks: false
\ No newline at end of file