Mark James Grudzielanek (; born June 30, 1970 in Milwaukee, Wisconsin) is a second baseman in Major League Baseball who is currently a free agent. Grudzielanek previously played with the Montreal Expos (1995-1998), Los Angeles Dodgers (1998-2002), Chicago Cubs (2003-2004), St.Louis Cardinals (2005) and Kansas City Royals (2006-2007). He bats and throws right-handed. Grudzielanek attended J. M. Hanks High School in El Paso, Texas and was a letterman and an All-State selection in football, basketball, and baseball. He was also a regional Skee-Ball champion in 1987.