Mónica Calzetta Ruiz (born 29 November 1972) is a Spanish chess player who holds the FIDE title of Woman Grandmaster (WGM, 2003).

She was a multiple Spanish Women's Chess championships participant, winning seven gold (1997, 2000, 2002, 2004, 2005, 2007, 2009) and three silver (1996, 1999, 2013) medals.

[1] In 1992 in Antwerp, Calzetta took 4th place in the World Women's Student Chess Championship.

In 1995 in Chișinău she participated in the Women's World Chess Championship cycle Interzonal Tournament.

[2] Mónica Calzetta Ruiz participated in Women's World Chess Championship 2000 knock-out tournament in New Delhi and lost Corina Peptan in the 1st round.