diff --git a/src/OpenSSL/SSL.py b/src/OpenSSL/SSL.py
index 8bbde5b..85d6e76 100644
--- a/src/OpenSSL/SSL.py
+++ b/src/OpenSSL/SSL.py
@@ -5,6 +5,8 @@
 from weakref import WeakValueDictionary
 from errno import errorcode
 
+from cryptography.utils import deprecated
+
 from six import binary_type as _binary_type
 from six import integer_types as integer_types
 from six import int2byte, indexbytes
@@ -1267,7 +1269,10 @@
         self._set_ocsp_callback(helper, data)
 
 
-ContextType = Context
+ContextType = deprecated(
+    Context, __name__,
+    "ContextType has been deprecated, use Context instead", DeprecationWarning
+)
 
 
 class Connection(object):
@@ -2153,7 +2158,11 @@
         _openssl_assert(rc == 1)
 
 
-ConnectionType = Connection
+ConnectionType = deprecated(
+    Connection, __name__,
+    "ConnectionType has been deprecated, use Connection instead",
+    DeprecationWarning
+)
 
 # This is similar to the initialization calls at the end of OpenSSL/crypto.py
 # but is exercised mostly by the Context initializer.
diff --git a/src/OpenSSL/crypto.py b/src/OpenSSL/crypto.py
index cdbcc22..ba918cc 100644
--- a/src/OpenSSL/crypto.py
+++ b/src/OpenSSL/crypto.py
@@ -12,6 +12,7 @@
 
 from cryptography import x509
 from cryptography.hazmat.primitives.asymmetric import dsa, rsa
+from cryptography.utils import deprecated
 
 from OpenSSL._util import (
     ffi as _ffi,
@@ -313,7 +314,11 @@
         return _lib.EVP_PKEY_bits(self._pkey)
 
 
-PKeyType = PKey
+PKeyType = deprecated(
+    PKey, __name__,
+    "PKeyType has been deprecated, use PKey instead",
+    DeprecationWarning
+)
 
 
 class _EllipticCurve(object):
@@ -648,7 +653,11 @@
         return result
 
 
-X509NameType = X509Name
+X509NameType = deprecated(
+    X509Name, __name__,
+    "X509NameType has been deprecated, use X509Name instead",
+    DeprecationWarning
+)
 
 
 class X509Extension(object):
@@ -816,7 +825,11 @@
         return _ffi.buffer(char_result, result_length)[:]
 
 
-X509ExtensionType = X509Extension
+X509ExtensionType = deprecated(
+    X509Extension, __name__,
+    "X509ExtensionType has been deprecated, use X509Extension instead",
+    DeprecationWarning
+)
 
 
 class X509Req(object):
@@ -985,7 +998,11 @@
         return result
 
 
-X509ReqType = X509Req
+X509ReqType = deprecated(
+    X509Req, __name__,
+    "X509ReqType has been deprecated, use X509Req instead",
+    DeprecationWarning
+)
 
 
 class X509(object):
@@ -1436,7 +1453,11 @@
         return ext
 
 
-X509Type = X509
+X509Type = deprecated(
+    X509, __name__,
+    "X509Type has been deprecated, use X509 instead",
+    DeprecationWarning
+)
 
 
 class X509StoreFlags(object):
@@ -1564,7 +1585,11 @@
         _openssl_assert(_lib.X509_STORE_set1_param(self._store, param) != 0)
 
 
-X509StoreType = X509Store
+X509StoreType = deprecated(
+    X509Store, __name__,
+    "X509StoreType has been deprecated, use X509Store instead",
+    DeprecationWarning
+)
 
 
 class X509StoreContextError(Exception):
@@ -2175,7 +2200,11 @@
         return dump_crl(type, self)
 
 
-CRLType = CRL
+CRLType = deprecated(
+    CRL, __name__,
+    "CRLType has been deprecated, use CRL instead",
+    DeprecationWarning
+)
 
 
 class PKCS7(object):
@@ -2222,7 +2251,11 @@
         return _ffi.string(string_type)
 
 
-PKCS7Type = PKCS7
+PKCS7Type = deprecated(
+    PKCS7, __name__,
+    "PKCS7Type has been deprecated, use PKCS7 instead",
+    DeprecationWarning
+)
 
 
 class PKCS12(object):
@@ -2399,7 +2432,11 @@
         return _bio_to_string(bio)
 
 
-PKCS12Type = PKCS12
+PKCS12Type = deprecated(
+    PKCS12, __name__,
+    "PKCS12Type has been deprecated, use PKCS12 instead",
+    DeprecationWarning
+)
 
 
 class NetscapeSPKI(object):
@@ -2492,7 +2529,11 @@
         _openssl_assert(set_result == 1)
 
 
-NetscapeSPKIType = NetscapeSPKI
+NetscapeSPKIType = deprecated(
+    NetscapeSPKI, __name__,
+    "NetscapeSPKIType has been deprecated, use NetscapeSPKI instead",
+    DeprecationWarning
+)
 
 
 class _PassphraseHelper(object):