Rhiner Allen Cruz Montero (born November 1, 1986) is a Dominican professional baseball pitcher who is a free agent. He has played in Major League Baseball (MLB) for the Houston Astros and Toronto Blue Jays, and in Nippon Professional Baseball (NPB) for the Tohoku Rakuten Golden Eagles. He played for Team Spain in the 2019 European Baseball Championship. He played for the team at the Africa/Europe 2020 Olympic Qualification tournament, in Italy in September 2019.