Anthony Ha-Jin Kim (born June 19, 1985) is an American professional golfer.

A Korean American, Kim was born in Los Angeles and resides in Dallas, Texas. He attended La Quinta High School in Westminster, California. After High School he attended the University of Oklahoma for three years. He was part of the winning USA team in the 2005 Walker Cup.

Kim turned professional in 2006 and after receiving a sponsor's exemption he finished in a tie for second on his PGA Tour debut at the 2006 Valero Texas Open. He earned his PGA Tour card through the qualifying school for the 2007 season. He made a strong start and broke into the top 100 in the Official World Golf Rankings in May 2007 with four top 10 finishes during his rookie season on the PGA Tour. In the 2007 U.S. Open, he shot a final round 67 earning him a tie for 20th place (he started the day at T57). His 67 was the lowest for the round and second lowest for the tournament.