César Antonio Crespo (born May 23, 1979) is a Puerto Rican former second baseman who last played in the Baltimore Orioles organization.

His most productive season came in 2001 with San Diego, when he hit .209 with four home runs (all coming from the left side of the plate) and 12 RBI in 55 games, all career-highs.

On June 7 of that year, Crespo and his brother Felipe homered in the same game, joining a select club of major league brothers who have accomplished the same honor.

[1] Crespo spent 2007 with the Norfolk Tides of the International League.

In 2008, Cesar played with the Puerto Rico Double A (AA) baseball league, for the "Mulos Del Valenciano" de Juncos.