diff --git a/pyperformance/data-files/benchmarks/MANIFEST b/pyperformance/data-files/benchmarks/MANIFEST
index 9d1f6c8c..35777453 100644
--- a/pyperformance/data-files/benchmarks/MANIFEST
+++ b/pyperformance/data-files/benchmarks/MANIFEST
@@ -92,6 +92,7 @@ sqlglot_v2_parse	<local:sqlglot_v2>
 sqlglot_v2_transpile	<local:sqlglot_v2>
 sqlglot_v2_optimize	<local:sqlglot_v2>
 sqlite_synth	<local>
+stdlib_startup	<local>
 sympy	<local>
 telco	<local>
 tomli_loads	<local>
diff --git a/pyperformance/data-files/benchmarks/bm_stdlib_startup/pyproject.toml b/pyperformance/data-files/benchmarks/bm_stdlib_startup/pyproject.toml
new file mode 100644
index 00000000..35f520bd
--- /dev/null
+++ b/pyperformance/data-files/benchmarks/bm_stdlib_startup/pyproject.toml
@@ -0,0 +1,10 @@
+[project]
+name = "pyperformance_stdlib_startup"
+requires-python = ">=3.10"
+dependencies = []
+urls = {repository = "https://github.com/python/pyperformance"}
+dynamic = ["version"]
+
+[tool.pyperformance]
+name = "stdlib_startup"
+tags = "startup"
diff --git a/pyperformance/data-files/benchmarks/bm_stdlib_startup/requirements.txt b/pyperformance/data-files/benchmarks/bm_stdlib_startup/requirements.txt
new file mode 100644
index 00000000..e69de29b
diff --git a/pyperformance/data-files/benchmarks/bm_stdlib_startup/run_benchmark.py b/pyperformance/data-files/benchmarks/bm_stdlib_startup/run_benchmark.py
new file mode 100644
index 00000000..a0e3057d
--- /dev/null
+++ b/pyperformance/data-files/benchmarks/bm_stdlib_startup/run_benchmark.py
@@ -0,0 +1,34 @@
+"""
+Measures the time it takes to import all the modules (excluding those with
+import side effects) in the stdlib.
+
+This benchmark is expected to change as the stdlib changes, so it is not
+suitable for measuring compilation time.
+"""
+
+import os
+import sys
+import subprocess
+import tempfile
+
+import pyperf
+
+if __name__ == "__main__":
+    runner = pyperf.Runner(values=10)
+
+    runner.metadata['description'] = "Performance of importing standard library modules"
+    args = runner.parse_args()
+
+    with tempfile.TemporaryDirectory() as tmp:
+        main = os.path.join(tmp, "main.py")
+        modules_to_import = sorted(sys.stdlib_module_names - {'antigravity', 'this'})
+        with open(main, 'w', encoding='utf-8') as f:
+            for module in modules_to_import:
+                f.write(f"""
+try:
+    import {module}
+except ImportError:
+    pass
+""")
+        command = [sys.executable, main]
+        runner.bench_command('stdlib_startup', command)