John Philip "Jack" McFarland is a fictional character on the American television sitcom Will & Grace, played by Sean Hayes.

Will & Grace is an American television sitcom created by Max Mutchnick and David Kohan. Set in New York City, the show focuses on the friendship between best friends Will Truman, a gay lawyer, and Grace Adler, a straight interior designer. The show was originally broadcast on NBC from September 21, 1998, to May 18, 2006, for a total of eight seasons, and returned to NBC on September 28, 2017, and permanently ended on April 23, 2020. Will & Grace has been one of the most successful television series with gay principal characters.