Erik Seidel (born November 6, 1959) is an American professional poker player from Las Vegas, Nevada, who has won ten World Series of Poker bracelets and a World Poker Tour title. In 2010, he was inducted into the Poker Hall of Fame.

Seidel was born in New York City. He played professional backgammon in his youth. He eventually became a trader on the American stock exchange stock market and later moved on to poker.

Seidel was one of the group of now famous players from the former Mayfair Club in New York City, including Stu Ungar, Jay Heimowitz, Mickey Appleman, Howard Lederer, Jason Lester, Steve Zolotow, Paul Magriel, and Dan Harrington.

In his first major poker tournament, Seidel was runner-up in the 1988 World Series of Poker Main Event to Johnny Chan. This final hand was featured in the 1998 movie Rounders. Seidel made the WSOP Main Event final table again in 1999, finishing in fourth place in the event won by Noel Furlong.

Seidel won his first WSOP bracelet in 1992. Seidel has won bracelets in five different games, including Hold'em, Omaha, and Deuce to Seven Draw.

On December 9, 2023, Seidel won his tenth bracelet in the $50,000 Super High Roller at WSOP Paradise (Bahamas) for $1,704,400 to tie Doyle Brunson, Johnny Chan, and Phil Ivey for second most WSOP bracelets all time.

During the sixth season of the World Poker Tour (WPT), Seidel won the 2008 WPT Foxwoods Poker Classic, earning $992,890.

In April 2011, Seidel came just short of winning his second WPT title at the Hollywood Open. He finished as the runner-up and won $155,103.