Niels Feijen is a Dutch professional pool player, from the Hague. His nickname is "the Terminator". In 2014 he won the WPA World 9-ball championship.

Pool is the name given to a series of cue sports played on a billiard table. The table has six pockets along the rails, into which balls are shot. Of the many different pool games, the most popular include: eight-ball, blackball, nine-ball, ten-ball, seven-ball, straight pool, one-pocket, and bank pool. Eight-ball is the most frequently played discipline of pool, and it is often thought of as synonymous with "pool".