Niuman José Romero (born January 24, 1985) is a Venezuelan professional baseball infielder who is a free agent.

He has previously played in Major League Baseball (MLB) for the Cleveland Indians and Boston Red Sox.

Romero split the 2007 season between Lake County and the High-A Kinston Indians, hitting a combined .231/.359/.306 in 81 games between the two teams.

[5] Romero played in 34 games for the Double-A Reading Phillies, also receiving a hitless at-bat for the Triple-A Lehigh Valley IronPigs, and hit .239/.312/.266 with no home runs and 11 RBI before he was released on July 13.

On December 14, 2012, Romero signed a minor league contract with the Baltimore Orioles organization that included an invitation to Spring Training.

[8] He did not make the team and split the 2013 season between the Double-A Bowie Baysox and Triple-A Norfolk Tides, hitting a cumulative .267/.367/.356 in 117 games.

On January 27, 2014, Romero signed a minor league contract with the Colorado Rockies,[9] but was released prior to the season on March 27.

On November 26, 2014, Romero signed a minor league contract with the Oakland Athletics organization that included an invitation to Spring Training.

[12] Romero split the 2016 season between the Triple-A Las Vegas 51s and Double-A Binghamton Mets, recording a .248/.331/.317 slash with one home run and 21 RBI in 90 total games.