Dennis Bryan Cook (born October 4, 1962) is an American former professional baseball pitcher. He played in Major League Baseball with nine teams from 1988 to 2002: the San Francisco Giants (1988–1989), Philadelphia Phillies (1989–1990, 2001), Los Angeles Dodgers (1990–1991), Cleveland Indians (1992–1993, 1995), Chicago White Sox (1994), Texas Rangers (1995–1996), Florida Marlins (1997), New York Mets (1998–2001), and Anaheim Angels (2002).