Timothy Roger Costo (born February 16, 1969 in Melrose Park, Illinois - a western suburb of Chicago) is an American former Major League Baseball player. Mainly a career first baseman, Tim played for the Cincinnati Reds in 1992 and 1993.

Tim attended the University of Iowa and played for the Hawkeyes from 1988-90; he was a third-team All-American by Collegiate Baseball as a sophomore in 1989 after hitting 21 home runs and driving in 77 runs. The following season he earned first-team All-America honors by Baseball America and The Sporting News after hitting 16 home runs and driving in 64 runs for a team that won 22 Big Ten games en route to the Big Ten regular season title and NCAA Tournament appearance

Tim was a first round draft pick (8th overall) in the 1990 Amateur Draft. He was drafted by the Cleveland Indians. Costo started in A+ ball and hit .316; halfway through the following year, he was traded to the Cincinnati Reds for Reggie Jefferson. After playing in 1992 for the Chattanooga Lookouts and hitting 28 home runs, he was brought up to the big leagues for 12 games in September.

He looked good in 1993 with the Indianapolis Indians, posting a line of .326/.372/.511 and coming to the majors for 31 games. Overall, he had a nine-year minor League career, in the farm system for the Indians, the Cincinnati Reds, the St. Louis Cardinals, and the Toronto Blue Jays.

Since his playing days, he has worked in the Chattanooga area for Rick Honeycutt Sportswear, as well as for a concrete service, and has coached at various schools including The McCallie School. He was inducted into the University of Iowa Athletics Hall of Fame in 2007.

(excerpted from Baseball Almanac, BR Bullpen & Wikipedia)