diff --git a/docs/development/test-vectors.rst b/docs/development/test-vectors.rst
index a10125a..2b04374 100644
--- a/docs/development/test-vectors.rst
+++ b/docs/development/test-vectors.rst
@@ -111,6 +111,13 @@
   contain an unencrypted X448 key.
 * ``asymmetric/X448/x448-pub.pem`` and ``asymmetric/X448/x448-pub.der`` contain
   an X448 public key.
+* ``asymmetric/X25519/x25519-pkcs8-enc.pem`` and
+  ``asymmetric/X25519/x25519-pkcs8-enc.der`` contain an X25519 key encrypted
+  with AES 256 CBC with the password ``password``.
+* ``asymmetric/X25519/x25519-pkcs8.pem`` and
+  ``asymmetric/X25519/x25519-pkcs8.der`` contain an unencrypted X25519 key.
+* ``asymmetric/X25519/x25519-pub.pem`` and ``asymmetric/X25519/x25519-pub.der``
+  contain an X25519 public key.
 
 
 Key exchange
diff --git a/vectors/cryptography_vectors/asymmetric/X25519/x25519-pkcs8-enc.der b/vectors/cryptography_vectors/asymmetric/X25519/x25519-pkcs8-enc.der
new file mode 100644
index 0000000..6ccb9c6
--- /dev/null
+++ b/vectors/cryptography_vectors/asymmetric/X25519/x25519-pkcs8-enc.der
Binary files differ
diff --git a/vectors/cryptography_vectors/asymmetric/X25519/x25519-pkcs8-enc.pem b/vectors/cryptography_vectors/asymmetric/X25519/x25519-pkcs8-enc.pem
new file mode 100644
index 0000000..41a0cb6
--- /dev/null
+++ b/vectors/cryptography_vectors/asymmetric/X25519/x25519-pkcs8-enc.pem
@@ -0,0 +1,6 @@
+-----BEGIN ENCRYPTED PRIVATE KEY-----
+MIGbMFcGCSqGSIb3DQEFDTBKMCkGCSqGSIb3DQEFDDAcBAhpD/eDDlJWogICCAAw
+DAYIKoZIhvcNAgkFADAdBglghkgBZQMEASoEEHiZSub6jPq6Jomsf+C+mLwEQN6y
+nINcwdu7jZprFHSqHp6APSr2vlm+cD3vJEAZTdUmqCVC5xuROZnbmrdZKyvvsBsI
+dWwG/swfbSkyfKs7EqM=
+-----END ENCRYPTED PRIVATE KEY-----
diff --git a/vectors/cryptography_vectors/asymmetric/X25519/x25519-pkcs8.der b/vectors/cryptography_vectors/asymmetric/X25519/x25519-pkcs8.der
new file mode 100644
index 0000000..bf9858f
--- /dev/null
+++ b/vectors/cryptography_vectors/asymmetric/X25519/x25519-pkcs8.der
Binary files differ
diff --git a/vectors/cryptography_vectors/asymmetric/X25519/x25519-pkcs8.pem b/vectors/cryptography_vectors/asymmetric/X25519/x25519-pkcs8.pem
new file mode 100644
index 0000000..3a56d90
--- /dev/null
+++ b/vectors/cryptography_vectors/asymmetric/X25519/x25519-pkcs8.pem
@@ -0,0 +1,3 @@
+-----BEGIN PRIVATE KEY-----
+MC4CAQAwBQYDK2VuBCIEILjKBCbUS62/bYdJ9EWYBEWdcXd2lonLwdZFbQjehDZn
+-----END PRIVATE KEY-----
diff --git a/vectors/cryptography_vectors/asymmetric/X25519/x25519-pub.der b/vectors/cryptography_vectors/asymmetric/X25519/x25519-pub.der
new file mode 100644
index 0000000..7541f22
--- /dev/null
+++ b/vectors/cryptography_vectors/asymmetric/X25519/x25519-pub.der
Binary files differ
diff --git a/vectors/cryptography_vectors/asymmetric/X25519/x25519-pub.pem b/vectors/cryptography_vectors/asymmetric/X25519/x25519-pub.pem
new file mode 100644
index 0000000..a63e723
--- /dev/null
+++ b/vectors/cryptography_vectors/asymmetric/X25519/x25519-pub.pem
@@ -0,0 +1,3 @@
+-----BEGIN PUBLIC KEY-----
+MCowBQYDK2VuAyEApwQil/BWCX/eUjIeFxYl2368f+V6taMuOR8hFB6urFI=
+-----END PUBLIC KEY-----