Jack Tripper is a fictional character on the sitcom Three's Company, based upon the character Robin Tripp from Man About the House created by Brian Cooke and Johnnie Mortimer. Jack was played by the actor John Ritter. Introduction Janet reasoned with the landlord, Stanley Roper, who lived downstairs, and he agreed that Jack could stay because Janet told Mr. Roper that Jack was gay, without Jack's knowledge. Jack was, however, actually straight (the comedy stemming from having to "play gay" provided much of the story for the sitcom). Jack is something of a ladies' man, but is also kind-hearted, loyal and protective of the girls. Jobs Jack attended a local technical college on the G.I. Bill for a degree in culinary arts and held down odd jobs in his spare time. References External links Jack's Bistro Fictional chefs Fictional impostors Fictional navy personnel Television characters introduced in 1977 Three's Company