Alberto "Baby" Arizmendi (March 17, 1914 – December 31, 1962) was a Mexican professional boxer and New York State Athletic Commission (NYSAC) featherweight world title holder in 1934.

The California sanctioned title match before a capacity crowd saw Arizmendi close strongly in the last two rounds to take a convincing lead on points.

[6][7] In his January 6, 1933, California sanctioned World featherweight title rematch with Bell in San Francisco, Arizmendi won in a ten round points decision.

[8] In his last successful defense of the California-sanctioned world featherweight champion, Arizmendi defeated Speedy Dado in a ten round points decision in Los Angeles on January 24, 1933.

He lost the California version of the title to NBA World featherweight champion Freddie Miller on February 28, 1933, in a 10-round unification bout in Los Angeles.

[4] On August 30, 1934, he defeated Mike Belloise for the New York state (NYSAC) world featherweight crown, leaving no doubt as to his claim to the championship.

[2] In Mexico City on November 4, 1934, he defeated Henry Armstrong in their first of five meetings, winning almost every round despite suffering a broken wrist in the second, and by some accounts taking claim of the California-Mexican World featherweight title.

In the eighth, Arizmendi suffered a bleeding cut near his right eye, helping Ambers to increase his points margin in the final two rounds.

In his following 6 fights, Arizmendi won five and had a ten round draw against reigning world lightweight champion Lou Ambers on June 7, 1938, in Los Angeles.

Armstrong characteristically crowded and threw continuous blows which included some fouls, but typical of his style, demonstrated neither elegant technique, nor graceful ring craft.

[4] Arizmendi faced Lou Ambers on February 24, 1939, losing in an eleventh round technical knockout in Madison Square Garden before a disappointing crowd of 8,837.

[13] After retiring from boxing, Arizmendi served in the U.S. Navy during World War II, and later operated restaurants in the Echo Park District of Los Angeles.

[3] After a prolonged illness, Arizmendi died of natural causes in the Veterans Administration Hospital in Sawtelle, California, now part of the Los Angeles suburb Westwood, on New Year's Eve 1962, at the age of 48.