List of Famous people born in Montana, United States of America

Joseph Medicine Crow was a war chief, author, and historian of the Crow Nation of Native Americans. His writings on Native American history and reservation culture are considered seminal works, but he is best known for his writings and lectures concerning the Battle of the Little Bighorn of 1876. He received the Bronze Star Medal and the Légion d'honneur for service during World War II, and the Presidential Medal of Freedom in 2009.

James Phillip Welch Jr., who grew up within the Blackfeet and A'aninin cultures of his parents, was a Native American novelist and poet, considered a founding author of the Native American Renaissance. His novel Fools Crow (1986) received several national literary awards, and his debut novel Winter in the Blood (1974) was adapted as a film by the same name, released in 2013.

Ryan David Leaf is a former American football player who was a quarterback in the National Football League (NFL) for four seasons. He played for the San Diego Chargers and the Dallas Cowboys between 1998 and 2001, and also spent time with the Tampa Bay Buccaneers and the Seattle Seahawks.

Robert J. O'Neill is a motivational speaker, Fox News contributor, and former United States Navy SEAL (1996–2012). After participating in May 2011's Operation Neptune Spear with SEAL Team Six, O'Neill was the subject of controversy for claiming to be the sole individual to kill Osama bin Laden.

Karan Armstrong was an American operatic soprano, who was celebrated as a singing actress. After winning the Metropolitan Opera National Council Auditions in 1966, she was given small roles at the Metropolitan Opera, and appeared in leading roles at the New York City Opera from 1969, including Conceptión in Ravel's L'heure espagnol, Blonde in Mozart's Die Entführung aus dem Serail, and the title roles in Verdi's La traviata, Offenbach's La belle Hélène and Puccini's La fanciulla del West. After she performed in Europe from 1974, first as Micaëla in Bizet's Carmen, and then as a sensational Salome at the Opéra du Rhin, she enjoyed a career at major opera houses, appearing in several opera recordings and films. Armstrong was for decades a leading soprano at the Deutsche Oper Berlin, where her husband Götz Friedrich was director. She appeared in world premieres, including Gottfried von Einem's Jesu Hochzeit, Luciano Berio's Un re in ascolto and York Höller's Der Meister und Margarita. She was awarded the title Kammersängerin twice.

Adam John Morrison is an American former professional basketball player. Morrison played for three years at Gonzaga University and was considered to be one of the top college basketball players in 2005–06. He was a finalist for the Naismith and the Wooden Award. He was named Co-Player of the Year with Duke's J. J. Redick by the United States Basketball Writers Association and won the 2006 Chevrolet Player of the Year award. He played for the NBA teams Charlotte Bobcats from 2006 to 2009 and L.A. Lakers in 2009-2010.

Dana Thomas Carvey is an American stand-up comedian, actor, impressionist, screenwriter and producer. He is best known for his work as a cast member on the sketch comedy show Saturday Night Live, which earned him a Primetime Emmy Award from five consecutive nominations.

Patrick Duffy is an American actor, widely known for his role on the CBS primetime soap opera Dallas, where he played Bobby Ewing, the youngest son of Miss Ellie and the nicest brother of J.R. Ewing from 1978 to 1985 and from 1986 to 1991. Duffy returned to reprise his role as Bobby in a continuation of Dallas, which aired on TNT from 2012 to 2014. He is also well known for his role on the ABC sitcom Step by Step as Frank Lambert from 1991 to 1998, and for his role as Stephen Logan on the CBS daytime soap opera The Bold and the Beautiful (2006-2011). Duffy played the lead character's father in the 2014 NBC sitcom Welcome to Sweden. He is also known for being the left leg of the mythological creature known as “Scuzzle Butt” in the first season of the hit animated television series “South Park.”

Robert Patrick Petrino is an American football coach. He was hired as the head coach at Missouri State University on January 15, 2020. Previously, he served as the head coach of the Louisville Cardinals football team from 2014 until being fired during the 2018 season. He previously held the post from 2003 to 2006. From 2008 to 2011, Petrino was the head football coach at the University of Arkansas. He was dismissed from that position in the spring of 2012 "with cause". Petrino also coached the Atlanta Falcons of the National Football League (NFL) for the first 13 games of the 2007 season, quitting to take the head coaching job of the Arkansas Razorbacks. He spent the 2013 season as head football coach of the Western Kentucky Hilltoppers.

Myrna Loy was an American film, television and stage actress. Trained as a dancer, Loy devoted herself fully to an acting career following a few minor roles in silent films. She was originally typecast in exotic roles, often as a vamp or a woman of Asian descent, but her career prospects improved greatly following her portrayal of Nora Charles in The Thin Man (1934).