diff --git a/doc/api/api_changes.rst b/doc/api/api_changes.rst
index 357518b8cf36..2f11afb16074 100644
--- a/doc/api/api_changes.rst
+++ b/doc/api/api_changes.rst
@@ -40,6 +40,12 @@ CocoaAgg backend removed
 ~~~~~~~~~~~~~~~~~~~~~~~~
 The deprecated and not fully functional CocoaAgg backend has been removed.
 
+`round` removed from TkAgg Backend
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+The TkAgg backend had its own implementation of the `round` function. This
+was unused internally and has been removed. Instead, use either the
+`round` builtin function or `numpy.round`.
+
 'hold' functionality deprecated
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 The 'hold' keyword argument and all functions and methods related
diff --git a/examples/pylab_examples/date_index_formatter.py b/examples/pylab_examples/date_index_formatter.py
index 1234bb5b5850..a7a4cae52b2c 100644
--- a/examples/pylab_examples/date_index_formatter.py
+++ b/examples/pylab_examples/date_index_formatter.py
@@ -9,7 +9,7 @@
 """
 
 from __future__ import print_function
-import numpy
+import numpy as np
 from matplotlib.mlab import csv2rec
 import matplotlib.pyplot as plt
 import matplotlib.cbook as cbook
@@ -27,7 +27,7 @@ def __init__(self, dates, fmt='%Y-%m-%d'):
 
     def __call__(self, x, pos=0):
         'Return the label for time x at position pos'
-        ind = int(round(x))
+        ind = int(np.round(x))
         if ind >= len(self.dates) or ind < 0:
             return ''
 
@@ -37,6 +37,6 @@ def __call__(self, x, pos=0):
 
 fig, ax = plt.subplots()
 ax.xaxis.set_major_formatter(formatter)
-ax.plot(numpy.arange(len(r)), r.close, 'o-')
+ax.plot(np.arange(len(r)), r.close, 'o-')
 fig.autofmt_xdate()
 plt.show()
diff --git a/lib/matplotlib/backends/backend_agg.py b/lib/matplotlib/backends/backend_agg.py
index ff7ccb461a1b..e3cd4ebf4592 100644
--- a/lib/matplotlib/backends/backend_agg.py
+++ b/lib/matplotlib/backends/backend_agg.py
@@ -210,7 +210,7 @@ def draw_text(self, gc, x, y, s, prop, angle, ismath=False, mtext=None):
 
         #print x, y, int(x), int(y), s
         self._renderer.draw_text_image(
-            font, round(x - xd + xo), round(y + yd + yo) + 1, angle, gc)
+            font, np.round(x - xd + xo), np.round(y + yd + yo) + 1, angle, gc)
 
     def get_text_width_height_descent(self, s, prop, ismath):
         """
@@ -257,8 +257,8 @@ def draw_tex(self, gc, x, y, s, prop, angle, ismath='TeX!', mtext=None):
         w, h, d = self.get_text_width_height_descent(s, prop, ismath)
         xd = d * sin(radians(angle))
         yd = d * cos(radians(angle))
-        x = round(x + xd)
-        y = round(y + yd)
+        x = np.round(x + xd)
+        y = np.round(y + yd)
 
         self._renderer.draw_text_image(Z, x, y, angle, gc)
 
diff --git a/lib/matplotlib/backends/backend_tkagg.py b/lib/matplotlib/backends/backend_tkagg.py
index 3c4ff72f32aa..b44d7728886d 100644
--- a/lib/matplotlib/backends/backend_tkagg.py
+++ b/lib/matplotlib/backends/backend_tkagg.py
@@ -50,9 +50,6 @@
     }
 
 
-def round(x):
-    return int(math.floor(x+0.5))
-
 def raise_msg_to_str(msg):
     """msg is a return arg from a raise.  Join with new lines"""
     if not is_string_like(msg):
diff --git a/lib/matplotlib/image.py b/lib/matplotlib/image.py
index bfd720d61737..e28d72460be7 100644
--- a/lib/matplotlib/image.py
+++ b/lib/matplotlib/image.py
@@ -152,7 +152,7 @@ def flush_images():
                     gc = renderer.new_gc()
                     gc.set_clip_rectangle(parent.bbox)
                     gc.set_clip_path(parent.get_clip_path())
-                    renderer.draw_image(gc, round(l), round(b), data)
+                    renderer.draw_image(gc, np.round(l), np.round(b), data)
                     gc.restore()
             del image_group[:]
 
diff --git a/lib/matplotlib/ticker.py b/lib/matplotlib/ticker.py
index 6bb383e8ee8c..754f2158159d 100644
--- a/lib/matplotlib/ticker.py
+++ b/lib/matplotlib/ticker.py
@@ -1760,8 +1760,8 @@ def _raw_ticks(self, vmin, vmax):
                 step = max(1, step)
             best_vmin = (_vmin // step) * step
 
-            low = round(Base(step).le(_vmin - best_vmin) / step)
-            high = round(Base(step).ge(_vmax - best_vmin) / step)
+            low = np.round(Base(step).le(_vmin - best_vmin) / step)
+            high = np.round(Base(step).ge(_vmax - best_vmin) / step)
             ticks = np.arange(low, high + 1) * step + best_vmin + offset
             nticks = ((ticks <= vmax) & (ticks >= vmin)).sum()
             if nticks >= self._min_n_ticks: