The Get a Mac campaign is a current (2006–present) television advertising campaign created for Apple Inc. by TBWA, the company's advertising agency. Shown in the United States, Canada, United Kingdom, Spain, Australia, Japan, and New Zealand, the ads in the campaign have become easily recognizeable owing to the fact that each ad follows a standard simple template: against a minimalist all-white background, a man dressed in casual clothes introduces himself as a Mac running Mac OS X ("Hello, I'm a Mac..."), while a man in a more formal suit and tie combination introduces himself as a non-Macintosh personal computer running Microsoft Windows ("... And I'm a PC."). The two then act out a brief vignette in which the capabilities and attributes of "Mac" and "PC" are compared, with PC—characterized as a formal, stuffy person overly concerned with work—often being frustrated by the more laid-back Mac's abilities. Some recent ads have shifted focus away from comparing features of the computer systems to a more general comparison. The most recent ones, however, are mainly concerning Microsoft's latest operating system, Windows Vista.

The original American ads star Justin Long as the Mac and author and humorist John Hodgman as the non-Mac PC, and are directed by Phil Morrison. The American ads also air on Canadian, Australian and New Zealand television. The recent British campaign stars comedic duo Robert Webb as Mac and David Mitchell as PC; although several of the British ads originated in the American campaign, they are generally slightly altered. The British campaign also features several original ads not seen in the American campaign.

The Get a Mac campaign is the successor to the "Switch" ads first broadcast in 2002. Arguably, the two are most similar in that actors in both campaigns were filmed against a plain white background. Apple CEO Steve Jobs introduced the campaign during a shareholders meeting the week before the campaign started. The campaign also coincided with a change of signage and employee apparel at Apple retail stores detailing reasons to switch to Macs.