Andrew Hammond Seliskar (born September 26, 1996) is a retired American competitive swimmer.

Previously, he attended Thomas Jefferson High School for Science and Technology in Virginia and swam for Nation’s Capital Swim Club.

[25] Seliskar led UC Berkeley's 800-yard freestyle relay,[26] securing a 6th place finish while setting a new school record of 1:31.28.

[10] Seliskar set new Conference Championship records in the 200-yard freestyle[32] and 200-yard breaststroke,[33] while also securing a victory in the 200-yard individual medley[34] His performance contributed to the Cal Golden Bears' tally of 15 wins throughout the meet, including a clean sweep of the event titles on the final day of competition.

[10][39] In December 2013, he won the gold medal in the 400 yard individual medley at the senior 2013 Winter National Championships.

[40] In 2015, Seliskar competed at the Summer Universiade in Gwangju, South Korea, and finished 8th in the 50-meter and 200-meter butterfly events.

[42] At the 2020 Summer Olympics in Tokyo, Japan, Seliskar competed in the prelims of the 4x200 meter freestyle relay along with Blake Pieroni, Patrick Callan, and Drew Kibler.