diff --git a/asv_bench/benchmarks/pandas_vb_common.py b/asv_bench/benchmarks/pandas_vb_common.py
index 56ccc94c414fb..a7e530e7f5ef1 100644
--- a/asv_bench/benchmarks/pandas_vb_common.py
+++ b/asv_bench/benchmarks/pandas_vb_common.py
@@ -25,11 +25,6 @@
     except:
         pass
 
-try:
-    Panel = Panel
-except Exception:
-    Panel = WidePanel
-
 # didn't add to namespace until later
 try:
     from pandas.core.index import MultiIndex
diff --git a/bench/bench_join_panel.py b/bench/bench_join_panel.py
index f3c3f8ba15f70..113b317dd8ff8 100644
--- a/bench/bench_join_panel.py
+++ b/bench/bench_join_panel.py
@@ -45,8 +45,8 @@ def reindex_on_axis(panels, axis, axis_reindex):
         return p
 
 
-# does the job but inefficient (better to handle like you read a table in
-# pytables...e.g create a LongPanel then convert to Wide)
+# Does the job but inefficient. It is better to handle
+# this like you read a table in pytables.
 def create_panels_join(cls, panels):
         """ given an array of panels's, create a single panel """
         panels = [a for a in panels if a is not None]
diff --git a/doc/source/whatsnew/v0.20.0.txt b/doc/source/whatsnew/v0.20.0.txt
index af0d0d7b04475..72e4bdea622be 100644
--- a/doc/source/whatsnew/v0.20.0.txt
+++ b/doc/source/whatsnew/v0.20.0.txt
@@ -772,6 +772,7 @@ Removal of prior version deprecations/changes
 - The ``Categorical`` constructor has dropped the ``name`` parameter (:issue:`10632`)
 - The ``take_last`` parameter has been dropped from ``duplicated()``, ``drop_duplicates()``, ``nlargest()``, and ``nsmallest()`` methods (:issue:`10236`, :issue:`10792`, :issue:`10920`)
 - ``Series``, ``Index``, and ``DataFrame`` have dropped the ``sort`` and ``order`` methods (:issue:`10726`)
+- The ``LongPanel`` and ``WidePanel`` classes have been removed (:issue:`10892`)
 
 .. _whatsnew_0200.performance:
 
diff --git a/pandas/core/api.py b/pandas/core/api.py
index 65253dedb8b53..5018de39ca907 100644
--- a/pandas/core/api.py
+++ b/pandas/core/api.py
@@ -15,7 +15,7 @@
 
 from pandas.core.series import Series
 from pandas.core.frame import DataFrame
-from pandas.core.panel import Panel, WidePanel
+from pandas.core.panel import Panel
 from pandas.core.panel4d import Panel4D
 from pandas.core.reshape import (pivot_simple as pivot, get_dummies,
                                  lreshape, wide_to_long)
diff --git a/pandas/core/panel.py b/pandas/core/panel.py
index 4a6c6cf291316..4927d9f8f1f38 100644
--- a/pandas/core/panel.py
+++ b/pandas/core/panel.py
@@ -1556,24 +1556,3 @@ def f(self, other, axis=0):
 ops.add_special_arithmetic_methods(Panel, **ops.panel_special_funcs)
 Panel._add_aggregate_operations()
 Panel._add_numeric_operations()
-
-
-# legacy
-class WidePanel(Panel):
-
-    def __init__(self, *args, **kwargs):
-        # deprecation, #10892
-        warnings.warn("WidePanel is deprecated. Please use Panel",
-                      FutureWarning, stacklevel=2)
-
-        super(WidePanel, self).__init__(*args, **kwargs)
-
-
-class LongPanel(DataFrame):
-
-    def __init__(self, *args, **kwargs):
-        # deprecation, #10892
-        warnings.warn("LongPanel is deprecated. Please use DataFrame",
-                      FutureWarning, stacklevel=2)
-
-        super(LongPanel, self).__init__(*args, **kwargs)
diff --git a/pandas/tests/api/test_api.py b/pandas/tests/api/test_api.py
index 73222c246fc70..2c7dcf2501f32 100644
--- a/pandas/tests/api/test_api.py
+++ b/pandas/tests/api/test_api.py
@@ -54,8 +54,7 @@ class TestPDApi(Base, tm.TestCase):
                'TimedeltaIndex', 'Timestamp']
 
     # these are already deprecated; awaiting removal
-    deprecated_classes = ['WidePanel', 'Panel4D',
-                          'SparseList', 'Expr', 'Term']
+    deprecated_classes = ['Panel4D', 'SparseList', 'Expr', 'Term']
 
     # these should be deprecated in the future
     deprecated_classes_in_future = ['Panel']
diff --git a/pandas/tests/io/test_pytables.py b/pandas/tests/io/test_pytables.py
index 40866b8702fe2..324160d5b1ae6 100644
--- a/pandas/tests/io/test_pytables.py
+++ b/pandas/tests/io/test_pytables.py
@@ -3017,9 +3017,6 @@ def _check(left, right):
         # empty
         # self._check_roundtrip(wp.to_frame()[:0], _check)
 
-    def test_longpanel(self):
-        pass
-
     def test_overwrite_node(self):
 
         with ensure_clean_store(self.path) as store:
diff --git a/pandas/tests/test_panel.py b/pandas/tests/test_panel.py
index ab0322abbcf06..370536b3b83d2 100644
--- a/pandas/tests/test_panel.py
+++ b/pandas/tests/test_panel.py
@@ -178,10 +178,6 @@ def wrapper(x):
 
 class SafeForSparse(object):
 
-    @classmethod
-    def assert_panel_equal(cls, x, y):
-        assert_panel_equal(x, y)
-
     def test_get_axis(self):
         assert (self.panel._get_axis(0) is self.panel.items)
         assert (self.panel._get_axis(1) is self.panel.major_axis)
@@ -2276,9 +2272,6 @@ class TestLongPanel(tm.TestCase):
     """
 
     def setUp(self):
-        import warnings
-        warnings.filterwarnings(action='ignore', category=FutureWarning)
-
         panel = tm.makePanel()
         tm.add_nans(panel)
 
diff --git a/vb_suite/pandas_vb_common.py b/vb_suite/pandas_vb_common.py
index bd2e8a1c1d504..41e43d6ab10e5 100644
--- a/vb_suite/pandas_vb_common.py
+++ b/vb_suite/pandas_vb_common.py
@@ -18,11 +18,6 @@
 except:
     import pandas._libs.lib as lib
 
-try:
-    Panel = WidePanel
-except Exception:
-    pass
-
 # didn't add to namespace until later
 try:
     from pandas.core.index import MultiIndex