diff --git a/keras/preprocessing/sequence.py b/keras/preprocessing/sequence.py
index dccb1751d..197288c75 100644
--- a/keras/preprocessing/sequence.py
+++ b/keras/preprocessing/sequence.py
@@ -4,13 +4,15 @@ import numpy as np
 import random
 from six.moves import range
 
-def pad_sequences(sequences, maxlen=None, dtype='int32'):
+def pad_sequences(sequences, maxlen=None, dtype='int32', padding='pre'):
     """
         Pad each sequence to the same length: 
         the length of the longuest sequence.
 
         If maxlen is provided, any sequence longer
         than maxlen is truncated to maxlen.
+
+        Support post-padding and pre-padding (default).
     """
     lengths = [len(s) for s in sequences]
 
@@ -20,7 +22,10 @@ def pad_sequences(sequences, maxlen=None, dtype='int32'):
 
     x = np.zeros((nb_samples, maxlen)).astype(dtype)
     for idx, s in enumerate(sequences):
-        x[idx, :lengths[idx]] = s[:maxlen]
+        if padding == 'post':
+            x[idx, :lengths[idx]] = s[:maxlen]
+        else:
+            x[idx, -min(maxlen, lengths[idx]):] = s[:maxlen]
     return x