Jack Leslie Clark was an American television personality, game show host, and announcer. He is best known for hosting The Cross-Wits, and as an offstage announcer for Password and Wheel of Fortune. On the latter, he succeeded original announcer Charlie O'Donnell and held the role from 1980 until his death in 1988.

The Cross-Wits is an American syndicated game show which premiered on December 15, 1975, and lasted for five seasons until its cancellation on September 12, 1980. The show was hosted by Jack Clark, with Jerri Fiala as hostess. Announcing duties were handled by John Harlan, Jay Stewart, and Jerry Bishop. The show was produced by Ralph Edwards Productions and distributed by Metromedia Producers Corporation.