diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 2d705b1..b520e48 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -23,7 +23,8 @@
   and
   :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKeyWithSerialization`.
 * Add support for parsing X.509 certificate signing requests (CSRs) with
-  :func:`~cryptography.x509.load_pem_x509_csr`.
+  :func:`~cryptography.x509.load_pem_x509_csr` and
+  :func:`~cryptography.x509.load_der_x509_csr`.
 
 0.8.1 - 2015-03-20
 ~~~~~~~~~~~~~~~~~~
diff --git a/docs/x509.rst b/docs/x509.rst
index 22b282c..dbfb441 100644
--- a/docs/x509.rst
+++ b/docs/x509.rst
@@ -118,6 +118,22 @@
     :returns: An instance of
         :class:`~cryptography.x509.CertificateSigningRequest`.
 
+.. function:: load_der_x509_csr(data, backend)
+
+    .. versionadded:: 0.9
+
+    Deserialize a certificate signing request (CSR) from DER encoded data. DER
+    is a binary format and is not commonly used with CSRs.
+
+    :param bytes data: The DER encoded request data.
+
+    :param backend: A backend supporting the
+        :class:`~cryptography.hazmat.backends.interfaces.X509Backend`
+        interface.
+
+    :returns: An instance of
+        :class:`~cryptography.x509.CertificateSigningRequest`.
+
 .. doctest::
 
     >>> from cryptography import x509
diff --git a/src/cryptography/hazmat/backends/interfaces.py b/src/cryptography/hazmat/backends/interfaces.py
index 354b514..5224f5c 100644
--- a/src/cryptography/hazmat/backends/interfaces.py
+++ b/src/cryptography/hazmat/backends/interfaces.py
@@ -263,6 +263,12 @@
         """
 
     @abc.abstractmethod
+    def load_der_x509_csr(self, data):
+        """
+        Load an X.509 CSR from DER encoded data.
+        """
+
+    @abc.abstractmethod
     def load_pem_x509_csr(self, data):
         """
         Load an X.509 CSR from PEM encoded data.
diff --git a/src/cryptography/hazmat/backends/multibackend.py b/src/cryptography/hazmat/backends/multibackend.py
index 54b044f..784ab84 100644
--- a/src/cryptography/hazmat/backends/multibackend.py
+++ b/src/cryptography/hazmat/backends/multibackend.py
@@ -325,6 +325,15 @@
             _Reasons.UNSUPPORTED_X509
         )
 
+    def load_der_x509_csr(self, data):
+        for b in self._filtered_backends(X509Backend):
+            return b.load_der_x509_csr(data)
+
+        raise UnsupportedAlgorithm(
+            "This backend does not support X.509.",
+            _Reasons.UNSUPPORTED_X509
+        )
+
     def load_pem_x509_csr(self, data):
         for b in self._filtered_backends(X509Backend):
             return b.load_pem_x509_csr(data)
diff --git a/src/cryptography/hazmat/backends/openssl/backend.py b/src/cryptography/hazmat/backends/openssl/backend.py
index 854219f..665771a 100644
--- a/src/cryptography/hazmat/backends/openssl/backend.py
+++ b/src/cryptography/hazmat/backends/openssl/backend.py
@@ -834,6 +834,16 @@
         x509_req = self._ffi.gc(x509_req, self._lib.X509_REQ_free)
         return _CertificateSigningRequest(self, x509_req)
 
+    def load_der_x509_csr(self, data):
+        mem_bio = self._bytes_to_bio(data)
+        x509_req = self._lib.d2i_X509_REQ_bio(mem_bio.bio, self._ffi.NULL)
+        if x509_req == self._ffi.NULL:
+            self._consume_errors()
+            raise ValueError("Unable to load request")
+
+        x509_req = self._ffi.gc(x509_req, self._lib.X509_REQ_free)
+        return _CertificateSigningRequest(self, x509_req)
+
     def _load_key(self, openssl_read_func, convert_func, data, password):
         mem_bio = self._bytes_to_bio(data)
 
diff --git a/src/cryptography/x509.py b/src/cryptography/x509.py
index 25bbe9c..113c35e 100644
--- a/src/cryptography/x509.py
+++ b/src/cryptography/x509.py
@@ -64,6 +64,10 @@
     return backend.load_pem_x509_csr(data)
 
 
+def load_der_x509_csr(data, backend):
+    return backend.load_der_x509_csr(data)
+
+
 class InvalidVersion(Exception):
     def __init__(self, msg, parsed_version):
         super(InvalidVersion, self).__init__(msg)
diff --git a/tests/hazmat/backends/test_multibackend.py b/tests/hazmat/backends/test_multibackend.py
index 4030538..5871e6c 100644
--- a/tests/hazmat/backends/test_multibackend.py
+++ b/tests/hazmat/backends/test_multibackend.py
@@ -200,6 +200,9 @@
     def load_pem_x509_csr(self, data):
         pass
 
+    def load_der_x509_csr(self, data):
+        pass
+
 
 class TestMultiBackend(object):
     def test_ciphers(self):
@@ -476,6 +479,7 @@
         backend.load_pem_x509_certificate(b"certdata")
         backend.load_der_x509_certificate(b"certdata")
         backend.load_pem_x509_csr(b"reqdata")
+        backend.load_der_x509_csr(b"reqdata")
 
         backend = MultiBackend([])
         with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_X509):
@@ -484,3 +488,5 @@
             backend.load_der_x509_certificate(b"certdata")
         with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_X509):
             backend.load_pem_x509_csr(b"reqdata")
+        with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_X509):
+            backend.load_der_x509_csr(b"reqdata")
diff --git a/tests/test_x509.py b/tests/test_x509.py
index 22b93f6..dc148d9 100644
--- a/tests/test_x509.py
+++ b/tests/test_x509.py
@@ -340,12 +340,21 @@
         with pytest.raises(UnsupportedAlgorithm):
             cert.signature_hash_algorithm
 
-    def test_load_rsa_certificate_request(self, backend):
-        request = _load_cert(
-            os.path.join("x509", "requests", "rsa_sha1.pem"),
-            x509.load_pem_x509_csr,
-            backend
-        )
+    @pytest.mark.parametrize(
+        ("path", "loader_func"),
+        [
+            [
+                os.path.join("x509", "requests", "rsa_sha1.pem"),
+                x509.load_pem_x509_csr
+            ],
+            [
+                os.path.join("x509", "requests", "rsa_sha1.der"),
+                x509.load_der_x509_csr
+            ],
+        ]
+    )
+    def test_load_rsa_certificate_request(self, path, loader_func, backend):
+        request = _load_cert(path, loader_func, backend)
         assert isinstance(request.signature_hash_algorithm, hashes.SHA1)
         public_key = request.public_key()
         assert isinstance(public_key, rsa.RSAPublicKey)
@@ -359,9 +368,13 @@
             x509.NameAttribute(x509.OID_COMMON_NAME, 'cryptography.io'),
         ]
 
-    def test_invalid_certificate_request_pem(self, backend):
+    @pytest.mark.parametrize(
+        "loader_func",
+        [x509.load_pem_x509_csr, x509.load_der_x509_csr]
+    )
+    def test_invalid_certificate_request(self, loader_func, backend):
         with pytest.raises(ValueError):
-            x509.load_pem_x509_csr(b"notacsr", backend)
+            loader_func(b"notacsr", backend)
 
     def test_unsupported_signature_hash_algorithm_request(self, backend):
         request = _load_cert(
@@ -424,12 +437,21 @@
                 "822ff5d234e073b901cf5941f58e1f538e71d40d", 16
             )
 
-    def test_load_dsa_request(self, backend):
-        request = _load_cert(
-            os.path.join("x509", "requests", "dsa_sha1.pem"),
-            x509.load_pem_x509_csr,
-            backend
-        )
+    @pytest.mark.parametrize(
+        ("path", "loader_func"),
+        [
+            [
+                os.path.join("x509", "requests", "dsa_sha1.pem"),
+                x509.load_pem_x509_csr
+            ],
+            [
+                os.path.join("x509", "requests", "dsa_sha1.der"),
+                x509.load_der_x509_csr
+            ],
+        ]
+    )
+    def test_load_dsa_request(self, path, loader_func, backend):
+        request = _load_cert(path, loader_func, backend)
         assert isinstance(request.signature_hash_algorithm, hashes.SHA1)
         public_key = request.public_key()
         assert isinstance(public_key, dsa.DSAPublicKey)
@@ -479,13 +501,22 @@
         with pytest.raises(NotImplementedError):
             cert.public_key()
 
-    def test_load_ecdsa_certificate_request(self, backend):
+    @pytest.mark.parametrize(
+        ("path", "loader_func"),
+        [
+            [
+                os.path.join("x509", "requests", "ec_sha256.pem"),
+                x509.load_pem_x509_csr
+            ],
+            [
+                os.path.join("x509", "requests", "ec_sha256.der"),
+                x509.load_der_x509_csr
+            ],
+        ]
+    )
+    def test_load_ecdsa_certificate_request(self, path, loader_func, backend):
         _skip_curve_unsupported(backend, ec.SECP384R1())
-        request = _load_cert(
-            os.path.join("x509", "requests", "ec_sha256.pem"),
-            x509.load_pem_x509_csr,
-            backend
-        )
+        request = _load_cert(path, loader_func, backend)
         assert isinstance(request.signature_hash_algorithm, hashes.SHA256)
         public_key = request.public_key()
         assert isinstance(public_key, ec.EllipticCurvePublicKey)