Jos Louis is a Canadian confection consisting of two chocolate cake rounds with a creamy filling within a milk chocolate shell, made by Vachon Inc.[1][2] It resembles a chocolate version of the May West dessert.

[3][4] However, as the May West was named after the popular American actress Mae West, a misconception exists that the Jos Louis was named after the popular American boxer Joe Louis born in 1914.

The ½ Moon cake is essentially a Jos Louis without the chocolaty coating, but has a smaller portion size of 51 grams.

A double-layered variant, the Super Jos Louis, has two layers of creamy filling in the middle.

In 2006, Entenmann's began distributing an equivalent of the ½ Moon in the US, with "Enten-Mini's Chocolate Half Rounds".