Old Mother Riley in Paris is a 1938 British comedy film directed by Oswald Mitchell and starring Arthur Lucan, Kitty McShane, Magda Kun and C. Denier Warren.

She goes home to make steak and kidney pudding for their lodger, Joe, who is vaguely engaged to Kitty, but distractedly pours castor oil into the gravy, with amusing results.

While changing a light bulb, Old Mother Riley has a fall from a stepladder, resulting in her hospitalisation: keen to claim the maximum amount on her insurance she alters her medical records for the worse, only to be carried off for an emergency operation when the doctors see how much appears to be "wrong" with her.

She and Kitty return to England (by boat) and are joined by the repentant Joe, finally welcomed into the household by Old Mother Riley, who toasts the couple with champagne which she has smuggled through customs.

"[4] Britmovie called it, "probably (the) most amusing of the long-running Mother Riley series...This irresistible espionage romp in pre-war France has plenty of tired cooking and mother-in-law jokes but there are entertaining moments of energetic slapstick humour.