diff --git a/docs/changelog/3946.feature.rst b/docs/changelog/3946.feature.rst
new file mode 100644
index 0000000000..7a7c52d655
--- /dev/null
+++ b/docs/changelog/3946.feature.rst
@@ -0,0 +1,2 @@
+Automatically pass the TERMINFO environment variable to tox subprocesses if the output is a TTY. This variable is used
+by Ghostty to communicate terminal capabilities to programs.
diff --git a/src/tox/tox_env/api.py b/src/tox/tox_env/api.py
index d03f0cf3bd..0f58c0f792 100644
--- a/src/tox/tox_env/api.py
+++ b/src/tox/tox_env/api.py
@@ -235,8 +235,8 @@ def _default_pass_env(self) -> list[str]:  # noqa: PLR6301
             "NETRC",  # used by pip and netrc modules
             "PYTHON_GIL",  # allows controlling python gil
         ]
-        if sys.stdout.isatty():  # if we're on a interactive shell pass on the TERM
-            env.append("TERM")
+        if sys.stdout.isatty():  # if we're on a interactive shell pass on the TERM and TERMINFO
+            env.extend(("TERM", "TERMINFO"))  # needed when TERM isn't in system terminfo db
         if sys.platform == "win32":  # pragma: win32 cover
             env.extend(
                 [
diff --git a/tests/session/cmd/test_show_config.py b/tests/session/cmd/test_show_config.py
index 373fd111d3..711a4e2646 100644
--- a/tests/session/cmd/test_show_config.py
+++ b/tests/session/cmd/test_show_config.py
@@ -207,7 +207,7 @@ def test_pass_env_config_default(tox_project: ToxProjectCreator, stdout_is_atty:
         + (["SSH_AGENT_PID", "SSH_AUTH_SOCK"] if not is_win else [])
         + ["SSL_CERT_FILE"]
         + (["SYSTEMDRIVE", "SYSTEMROOT", "TEMP"] if is_win else [])
-        + (["TERM"] if stdout_is_atty else [])
+        + (["TERM", "TERMINFO"] if stdout_is_atty else [])
         + (["TMP", "USERPROFILE"] if is_win else ["TMPDIR"])
         + ["VIRTUALENV_*"]
         + (["WINDIR"] if is_win else [])