Hopalong Rides Again is a 1937 American Western film directed by Lesley Selander and written by Norman Houston.

The film stars William Boyd, George "Gabby" Hayes, Russell Hayden, Nora Lane, Harry Worth, Lois Wilde and Billy King.

Hopalong, Lucky, and Windy are working for the Bar 20 Ranch owned by Buck Peters.

Buck needs cash and tells Hopalong to bring some cattle to Fort Hastings.

Nora Blake lives in the Black Butte area and Hopalong is smitten by her.

It turns out that Nora's brother, Professor Hepburne, is the ruthless leader of the rustlers.

Before the cattle drive Hopalong meets the Professor when he stops by the Bar 20 to get his horse reshod.

So Windy can't go as Hopalong wished to get Buck to bring the ranch people back to fight the rustlers.