Jesús Alexander Aguilar (born June 30, 1990) is a Venezuelan professional baseball first baseman who is a free agent.

He has previously played in Major League Baseball (MLB) for the Cleveland Indians, Milwaukee Brewers, Tampa Bay Rays, Miami Marlins, Baltimore Orioles, and Oakland Athletics, and in Nippon Professional Baseball (NPB) for the Saitama Seibu Lions.

[10] After a strong performance during spring training in 2017, Aguilar made the Brewers' Opening Day roster.

[11] He played in 133 games, finishing the season with a .265 batting average, .331 OBP, 16 home runs, and 52 RBIs.

He cooled off in the second half, but still finished the season hitting .274 with 35 home runs and 108 RBI, and tied for the major league lead in sacrifice flies (10).

[15] In the 2018 NLDS, against the Colorado Rockies, he went 1-for-11 with a home run in Game 3 off of German Marquez in the Brewers' series-clinching 6-0 victory.

In October 2018, Aguilar won the Luis Aparicio Award, which is given annually to a Venezuelan player in Major League Baseball who is judged to have recorded the best individual performance in that year.

[16] On July 31, 2019, the Brewers traded Aguilar to the Tampa Bay Rays in exchange for Jake Faria.

[25] On June 13, 2023, Aguilar signed a minor league contract with the Atlanta Braves organization.

[30] It was announced on October 30, that the Lions would not renew Aguilar's contract for the 2025 season, making him a free agent.