George Elmer Pataki (/pəˈtɑːki/; born June 24, 1945) is an American politician who served as the 53rd governor of New York from 1995 to 2006. He previously served in the State Legislature from 1985 to 1994, and as the mayor of Peekskill from 1981 to 1984. Pataki was the third Republican since 1923 to win New York's governorship, after Thomas E. Dewey and Nelson Rockefeller, and is the most recent one to do so.

Pataki's most notable achievements as governor included the creation of a number of new health care programs, presiding over recovery efforts following the September 11 attacks, and for increasing the state's credit rating three times. He chose not to run for a fourth term in 2006; he was succeeded by Democrat Eliot Spitzer. Pataki and Mary Donohue (his second Lt. Governor) are the last Republicans elected to statewide office in New York, although Republicans Joseph Bruno and Dean Skelos each briefly served as acting Lieutenant Governor in 2008.

Pataki announced his candidacy for the Republican Party presidential nomination on May 28, 2015. He withdrew from the race shortly before the primaries began on December 29, 2015.

Pataki was born on June 24, 1945 in Peekskill, New York. Pataki's paternal grandfather was Pataki János (known in the U.S. as John Pataki, 1883–1971) of Aranyosapáti, Kingdom of Hungary. The family name's Hungarian pronunciation is ['pɒtɒki] and means "from the creek (little river)." János came to the United States in 1908, worked in a hat factory and had married Erzsébet (later Elizabeth; 1887–1975), also Hungarian-born, around 1904. Their son, Pataki's father, was Louis P. Pataki (1912–1996), a mailman and volunteer fire chief, who ran the Pataki Farm. Pataki's maternal grandfather was Matteo Laganà (born in Calabria, Italy in 1889), who married Agnes Lynch of County Louth, Ireland around 1914. Their daughter, Margaret Lagana (1915–2017), was Pataki's mother. Pataki has an older brother, Louis. Pataki speaks some Hungarian as well as Spanish, French, and German.

After graduating from Peekskill High School, Pataki entered Yale University in 1963 on an academic scholarship and graduated in 1967 with a history major. While there, Pataki was Chairman of the Conservative Party of the Yale Political Union, where he participated in debates. He received his J.D. from Columbia Law School in 1970.

While practicing law at Plunkett and Jaffe, P.C. in Peekskill, Pataki became friends with Michael C. Finnegan, who would go on to be the architect of Pataki's ascendancy to power. Finnegan would go on to manage Pataki's campaigns for Mayor, State Assembly, State Senate, and the governorship. Finnegan was then appointed chief counsel to the governor in 1995, and played the key role in developing and negotiating nearly all of Pataki's early legislative success.

Pataki first won elected office in November 1981. He was elected mayor of the city of Peekskill, which is located in the northwestern part of Westchester County. Pataki defeated Democratic incumbent Fred Bianco Jr., winning 70% of the vote. In November 1983, he was re-elected mayor, winning 74% of the vote.

In November 1984, Pataki was elected to the New York State Assembly (91st District), by defeating one-term Democratic incumbent William J. Ryan, winning 53% of the vote. In November 1986, Pataki defeated Ryan in a rematch, capturing 63% of the vote. Pataki won a third term in November 1988, winning 74% of the vote against Democratic candidate Mark Zinna. Pataki won a fourth and final term in November 1990, winning over 90% of the vote, as he only faced a minor party candidate. He was an assemblyman in the 186th, 187th, 188th and 189th New York State Legislatures.