diff --git a/doc/release/upcoming_changes/18662.new_feature.rst b/doc/release/upcoming_changes/18662.new_feature.rst
new file mode 100644
index 000000000000..7adfcee79e1f
--- /dev/null
+++ b/doc/release/upcoming_changes/18662.new_feature.rst
@@ -0,0 +1,5 @@
+Add support for array-likes in polynomial evaluation
+----------------------------------------------------------------------------
+
+Polynomial evaluation now accepts array-likes (e.g. lists) as its
+input argument, in addition to NumPy arrays.
diff --git a/numpy/polynomial/_polybase.py b/numpy/polynomial/_polybase.py
index b04b8e66b09c..437e1163164a 100644
--- a/numpy/polynomial/_polybase.py
+++ b/numpy/polynomial/_polybase.py
@@ -479,6 +479,7 @@ def __setstate__(self, dict):
 
     def __call__(self, arg):
         off, scl = pu.mapparms(self.domain, self.window)
+        arg = np.asarray(arg)
         arg = off + scl*arg
         return self._val(arg, self.coef)