Jason McElwain, nicknamed J-Mac (born October 20, 1988), is an American amateur athlete in basketball and marathon running, and a public speaker with high-functioning autism.

In a 2006 high-school basketball game, he scored 20 points in the final few minutes of the contest, a feat which attracted international media attention.

On February 15, 2006, McElwain played in a senior night basketball game against Spencerport High School, for a division title.

Greece Athena got a large lead, so Coach Johnson decided to let McElwain play in the last four minutes and nineteen seconds of the game.

Footage of the event was featured on ESPN days after the game, and a short film about McElwain's life, The Magic Of J-Mac, was released in 2009.

[9] McElwain's performance was videotaped by fellow Greece Athena student Marcus Luciano, who was substituting for the team's normal videographer.

[4] Standing next to McElwain, Bush told reporters, "As you can see, a special person has greeted us at the airport, Jason", and then jokingly asked, "Can I call you J-Mac?

[16] Magic Johnson was attached as producer, while two-time Academy Award winner Alvin Sargent was in talks to write the script.

[16] McElwain completed his GED courses and planned to go to college,[12][17] and has a full-time job at Wegmans Food Markets in Greece, New York.

[12] McElwain also travels across the United States to help raise funds for autism research and to make media appearances.

[7] He is also involved in public speaking, including an October 2011 speech at the Jefferson Rehabilitation House's annual dinner.

[10] In April 2016, the Rochester Razorsharks, a professional minor-league basketball team, signed McElwain to a one-day contract for their regular season finale against the Western New York Thundersnow.