Anthony Robert Martin-Trigona, usually known as Andy Martin (born 1945) is an American perennial candidate who has never been elected to office, running as both a Democrat and a Republican.

He is a vexatious litigant who has filed over 250 political lawsuits nationwide. In Connecticut, a federal judge once banned Martin from filing lawsuits in any court in the nation without a judge's permission. The federal judge said Martin considered filing lawsuits to be a "veritable sport."

The Nation, The Washington Post, and The New York Times identified Martin as the primary source of false rumors that then-presidential candidate Barack Obama was secretly a Muslim during the 2008 presidential election (an allegation Martin had made as early as 2004). In a later interview with CNN, Martin explicitly abandoned this view and now asserts Obama's real father is not Barack Obama Sr., but African-American journalist Frank Marshall Davis.

On October 17, 2008, Martin filed a lawsuit against the state of Hawaii calling for the public release of Barack Obama's birth certificate and other vital records. At the time, conspiracy theories postulated that Obama is not a natural-born citizen of the United States. Obama had previously posted an image of his short-form birth certificate online. But Martin's lawsuit sought a copy of Sen. Obama's long-form birth certificate. On November 19, the Hawaii Supreme Court dismissed Martin's lawsuit.

Martin was born in 1945 in Middletown, Connecticut. His father, Ralph Beneducci Martin-Trigona, was of Italian, Maltese, and English descent, and his mother, Helen Anthony (née Vasiliou), was Greek American. He received a B.A. from the University of Illinois in 1966, and a J.D. from that institution in 1969.

In 1973 the Illinois Supreme Court refused to grant Martin a license to practice law in the state due to such conduct as attempting to have a parking violation thrown out because it had been "entered by an insane judge" and for commenting that an attorney, who suffers from a mild case of cerebral palsy, was "shaking and tottering and drooling like an idiot." The court also cited Martin's Selective Service record, which attributed to him "a moderately severe character defect manifested by well-documented ideation with a paranoid flavor and a grandiose character."

Martin then became involved in consumer advocacy and referred to himself as "the people's attorney general". He claimed to be the first to file antitrust cases against the Big Three television networks for anticompetitive practices in network affiliation agreements and the first to bring a lawsuit under the civil component of the Racketeer Influenced and Corrupt Organizations Act (RICO).

Martin grew up as a Democrat, and served as an intern to Senator Paul Douglas in the summer of 1966. In 1977, he ran in a special election for Mayor of Chicago, but lost in the Democratic primary to acting mayor Michael Bilandic, receiving less than 3% of the vote.