Michael Jerome Oher (/ɔːr/; né Williams Jr.; born May 28, 1986) is an American former professional football tackle who played in the National Football League (NFL) for eight seasons. He played college football for the Ole Miss Rebels, earning unanimous All-American honors and winning the Jacobs Blocking Trophy in 2008. Oher was selected in the first round of the 2009 NFL draft by the Baltimore Ravens, where he spent his first five seasons and was a member of the team that won Super Bowl XLVII. He later played one season for the Tennessee Titans and his final two for the Carolina Panthers.

Oher's life through his final year of high school and first year of college is one of the subjects of Michael Lewis's 2006 book The Blind Side: Evolution of a Game and was dramatized in the 2009 film adaptation.

Oher was born in Memphis, Tennessee; he was one of 12 children of Denise Oher. His mother suffered from alcoholism and crack cocaine addiction, and his father, Michael Jerome Williams, was frequently in prison. He received little attention or discipline during his childhood. He repeated first and second grades, and attended eleven schools during his first nine years as a student. He was placed in foster care at age seven, and alternated between living in various foster homes and periods of homelessness. Oher's father was murdered when Oher was a senior in high school.

Oher played football during his freshman year at a public high school in Memphis. He applied for admission to Briarcrest Christian School at the suggestion of Tony Henderson, an auto mechanic with whom he was living temporarily. Henderson was enrolling his son at the school to fulfill the dying wish of the boy's grandmother and thought Oher might enroll as well. The school's football coach, Hugh Freeze, submitted Oher's school application to the headmaster, who agreed to accept him if Oher could complete a home study program first. He did not finish the program, but was admitted when the headmaster realized that his requirement had removed Oher from the public education system.

Coached by Freeze and Tim Long, Briarcrest's offensive line coach, Oher was named Division II (2A) Lineman of the Year in 2003, and First-team Tennessee All-State. Scout.com rated Oher a five-star recruit and the No. 5 offensive lineman prospect in the country. Before that season and for his prior 20 months at Briarcrest, Oher had been living with several foster families. In 2004, Leigh Anne and Sean Tuohy, a couple with a daughter and son attending Briarcrest, invited Oher to live with them. When the family learned about his difficult childhood, they began to help him succeed academically and socially. They hired a tutor for him, who worked 20 hours per week with him. Oher would later allege in 2023 that they tricked him into signing a document making them conservators while telling him it was the same as adoption.

Oher earned two letters each in track and basketball. He averaged 22 points and 10 rebounds per game, earning All-State honors by helping lead the basketball team to a 27–6 record and winning the district championship in Oher's senior year. Oher was also a state runner-up in the discus as a senior.

Oher's initial low grades were a barrier to his acceptance to an NCAA program. He raised his 0.76 grade point average (GPA) to a 2.52 GPA by the end of his senior year so he could attend a Division I school, by enrolling in 10-day online courses from Brigham Young University. Taking and passing the online courses allowed him to replace D's and F's earned in earlier school classes, such as English, with A's, raising his graduating GPA above the required minimum.

At the conclusion of his senior season, Oher participated in the 2005 U.S. Army All-American Bowl.