Wallis Cinemas, formerly Wallis Theatres, is a family-owned South Australian company that operates cinema complexes in greater Adelaide and regional South Australia.

Wallis Theatres works in conjunction with Big Screen Advertising, a company which distributes and screens advertisements at cinemas.

This family-owned company was established as Wallis Theatres by its founder, Hugh Wallis, in December 1953, with the opening of the Blueline drive-in at West Beach. Wallis gave up a refrigeration business to move into the cinema industry.

In 1991, Hugh's son Bob Wallis bought the Barr Smith home, Auchendarroch House, at Mount Barker, and restored it, including adding a tavern and a seven-screen cinema complex.

Hugh Wallis died in 1994, and Bob, then general manager, took over the business.

Bob Wallis died in 2007, and his wife Lorna and their daughter Michelle, and granddaughter Deanna continued to run the business.

In 2005, Wallis Theatres changed their branding for all public advertising purposes to "Wallis Cinemas". Officially, however, the company was still known as Wallis Theatres. This changed in late 2007 when officially it was changed to the new name Wallis Cinemas.^{[citation needed]}

The Blueline was the state's first drive-in theatre, and the second in the country. It was established on a 40-acre (16 ha) plot purchased from Adelaide Airport. Wallis Theatres expanded rapidly, opening drive-ins throughout South Australia over the next decade. The company operated the following drive-ins in Adelaide: