diff --git a/pandas/core/generic.py b/pandas/core/generic.py
index d3ab7afc025c9..2b683d3a606b1 100644
--- a/pandas/core/generic.py
+++ b/pandas/core/generic.py
@@ -5289,6 +5289,7 @@ def fillna(self, value=None, method=None, axis=None, inplace=False,
 
         See Also
         --------
+        interpolate : Fill NaN values using interpolation.
         reindex, asfreq
 
         Returns
diff --git a/pandas/core/resample.py b/pandas/core/resample.py
index 0d0023b9f67d3..f8d283e932f44 100644
--- a/pandas/core/resample.py
+++ b/pandas/core/resample.py
@@ -659,6 +659,7 @@ def fillna(self, method, limit=None):
         pad : Forward fill NaN values in the resampled data.
         nearest : Fill NaN values in the resampled data
             with nearest neighbor starting from center.
+        interpolate : Fill NaN values using interpolation.
         pandas.Series.fillna : Fill NaN values in the Series using the
             specified method, which can be 'bfill' and 'ffill'.
         pandas.DataFrame.fillna : Fill NaN values in the DataFrame using the