diff --git a/Doc/library/os.rst b/Doc/library/os.rst
index 371d59e9c31a45..bf1cda29b06984 100644
--- a/Doc/library/os.rst
+++ b/Doc/library/os.rst
@@ -3871,6 +3871,8 @@ written in Python, such as a mail server's external command delivery program.
 
    See the :manpage:`pidfd_open(2)` man page for more details.
 
+   .. audit-event:: os.pidfd_open pid,flags os.pidfd_open
+
    .. availability:: Linux 5.3+
    .. versionadded:: 3.9
 
diff --git a/Doc/library/signal.rst b/Doc/library/signal.rst
index 84a569d03eb293..07f7c60705ec94 100644
--- a/Doc/library/signal.rst
+++ b/Doc/library/signal.rst
@@ -360,6 +360,8 @@ The :mod:`signal` module defines the following functions:
 
    See the :manpage:`pidfd_send_signal(2)` man page for more information.
 
+   .. audit-event:: signal.pidfd_send_signal pidfd,sig,siginfo,flags signal.pidfd_send_signal
+
    .. availability:: Linux 5.1+
    .. versionadded:: 3.9
 
diff --git a/Misc/NEWS.d/next/Security/2021-04-21-18-04-12.bpo-38692.Arq9me.rst b/Misc/NEWS.d/next/Security/2021-04-21-18-04-12.bpo-38692.Arq9me.rst
new file mode 100644
index 00000000000000..90d88953fa51eb
--- /dev/null
+++ b/Misc/NEWS.d/next/Security/2021-04-21-18-04-12.bpo-38692.Arq9me.rst
@@ -0,0 +1,2 @@
+Add audit events to :func:`os.pidfd_open` and
+:func:`signal.pidfd_send_signal`.
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 8ce62c88216e3d..f31e2b639f1f5a 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -8485,6 +8485,9 @@ static PyObject *
 os_pidfd_open_impl(PyObject *module, pid_t pid, unsigned int flags)
 /*[clinic end generated code: output=5c7252698947dc41 input=c3fd99ce947ccfef]*/
 {
+    if (PySys_Audit("os.pidfd_open", "iI", pid, flags) < 0) {
+        return NULL;
+    }
     int fd = syscall(__NR_pidfd_open, pid, flags);
     if (fd < 0) {
         return posix_error();
diff --git a/Modules/signalmodule.c b/Modules/signalmodule.c
index 98a938f1976735..c7c157bbd0cf04 100644
--- a/Modules/signalmodule.c
+++ b/Modules/signalmodule.c
@@ -1305,6 +1305,10 @@ signal_pidfd_send_signal_impl(PyObject *module, int pidfd, int signalnum,
         PyErr_SetString(PyExc_TypeError, "siginfo must be None");
         return NULL;
     }
+    if (PySys_Audit("signal.pidfd_send_signal", "iiOi", pidfd, signalnum,
+                    siginfo, flags) < 0) {
+        return NULL;
+    }
     if (syscall(__NR_pidfd_send_signal, pidfd, signalnum, NULL, flags) < 0) {
         PyErr_SetFromErrno(PyExc_OSError);
         return NULL;