Martha Salazar (born February 2, 1970) is a female boxer who hails from San Francisco, California. Salazar, whose global boxing ID is US-CA-061872, fights as a Heavyweight. She is the WIBF's world Heavyweight champion. Her nickname is "The Shadow".

Salazar became the third Hispanic to become world Heavyweight champion in all of boxing's history, and the second one in women's boxing history. The first Hispanic to win a world Heavyweight championship in boxing was male boxer John Ruiz of Puerto Rico.

Salazar debuted as a professional boxer on March 25, 2001, defeating Denise Callahan by a four round decision in Hayward, California. She followed that victory with two back to back wins over Carley Pesente , defeating Pesente twice by four round unanimous decisions, both times in Tacoma, Washington.

Salazar won two more fights, including a six round decision win win on November 16, 2002, over Kisha Snow, who had six wins and only one loss coming into their fight.

On March 1, 2003, Salazar made her Las Vegas debut. She suffered her first career defeat that night, being beaten on points over four rounds by former NCAA basketball star Vonda Ward, who ran her record to sixteen victories and no losses after beating Salazar.

Salazar rebounded with her first knockout win, however, when she beat Pesente in their third bout, held on May 24, in Vallejo, California. Salazar beat Pesente in the first round.

Salazar received her first world title shot after that win, attempting to win the WIBA world Heavyweight title on June 11, 2003, when she lost by a ten round decision to Ward in their rematch, held at Canton, Ohio.

On March 18, 2004, Salazar met Marsha Valley in California and she lost for the second time in a row, this time by a split six round decision.

On October 16, she and Valley met in a rematch, fighting in Oakland, for the WBE 's world Super Heavyweight title. The Super Heavyweight division is a division that is only recognized in amateur boxing and by a couple of women's boxing organizations. It is not recognized at all in men's boxing. Salazar avenged her earlier loss to Valley and, nevertheless, became a world champion for the first time, when she defeated Valley by an eight round unanimous decision.

Salazar went down in weight to compete for the world Heavyweight championship for the second time, when she was offered a chance to meet Pamela London for the WIBF's vacant world Heavyweight title.

On November 28 of 2004, Salazar had her first fight abroad when she and London met in Guyana. With a weight of 240 pounds for that fight, Salazar became the WIBF world Heavyweight champion, by knocking London out in nine rounds.

Salazar has a record of 8 wins and 3 losses, with 2 wins by knockout.