Stefen Daniel Romero (born October 17, 1988) is an American former professional baseball right fielder.

Playing for the school's baseball team, he earned an all-southern Arizona honorable mention from the Tucson Citizen following his senior season.

[5][6] He made his professional debut in 2011 with the Single–A Clinton LumberKings, logging a .280/.342/.462 slash line with 16 home runs and 65 RBI.

[7][8] He was assigned to the Tacoma Rainiers of the Triple–A Pacific Coast League in 2013, but started the season on the disabled list with an oblique injury.

[10] In 2014, Romero made the Mariners' Opening Day roster,[11] and had his major league debut on April 1.

[16] He signed with the Orix Buffaloes of Nippon Professional Baseball's Pacific League on November 24, 2016.

[19] On January 27, 2020, Romero signed with the Rakuten Golden Eagles of Nippon Professional Baseball(NPB).

[26] After beginning the season with the Triple-A Oklahoma City Dodgers he was added to the major league roster on June 22.

[29] Romero played in 30 games for Oklahoma City, hitting .265/.353/.431 with three home runs and 22 RBI[30] before he was placed on the injured list on July 9 and stayed there the rest of the season.