Antonio Llamas Perezchica (born 20 April 1966) is a Mexican professional baseball player and coach. He played in Major League Baseball (MLB) as an infielder for the San Francisco Giants and Cleveland Indians from 1988–1992. He currently serves as the third base coach for the Houston Astros.

Perezchica was drafted by the San Francisco Giants in the third round of the 1984 Major League Baseball Draft. He began his professional career that year with the Short-Season Everett Giants of the Northwest League. He batted .193 with six doubles and one triples in 33 games.

In his second professional season, 1985, Perezchica was promoted to the Class-A Clinton Giants of the Midwest League. He hit .241 with 109 hits, 21 doubles, eight triples and four home runs in 127 games.

He spent the 1986 season with the Class-A Fresno Giants of the California League. Perezchica hit .279 with 30 doubles, eight triples, and nine home runs in 126 games.

With the Double-A Shreveport Captains of the Texas League in 1987 hit .319 with 24 doubles, one triple and 11 home runs in 89 games.

The next season, 1988, Perezchica split time with the Triple-A Phoenix Firebirds and the Major League Giants. He hit .306 with 18 doubles, 10 triples and nine home runs in 134 games with Phoenix. In limited time at the Major League level, Perezchica had one hit in eight at-bats and seven games. He played six games in the field, two for starts, and they were all at second base.

Perezchica played the 1989 season at the Triple-A level with the Phoenix Firebirds of the Pacific Coast League. He hit .231 with 11 doubles, three triples and eight home runs in 94 games. He did not play at the Major League level in 1989.

In 1990, Perezchica again split the season with the Triple-A Phoenix Firebirds and the Giants. He hit .268 with 22 doubles, six triples and nine home runs. With the Major League club in 1990 Perezchica had one hit in three at-bats. He played two games at second base and two games at shortstop.