Johnson Abernathy Graetz High School (formerly Jefferson Davis High School) is a public high school with grades 9 through 12 located in Montgomery, Alabama, United States. The principal is Dr. Carlos Hammonds. The school is part of the Montgomery Public Schools system.

The school was named after the only-ever president of the Confederate States of America, Jefferson Davis, in the 1960s, a century after the Confederacy collapsed.

In 2020, the school district's board of education voted to change the school's name from Jefferson Davis High School, a decision that was affirmed in 2022 despite two years of opposition from local pro-Confederacy groups. The school is to be renamed JAG High School, in honor of three civil rights leaders: Frank Minis Johnson, a judge who ruled in favor of Rosa Parks to strike down segregation policies in Montgomery; pastor and activist Ralph Abernathy; and Robert Graetz, a minister who helped organize the Montgomery Bus Boycott.

• Travis Bell, professional football nose tackle
• Craig Brazell, former MLB player
• Gwendolyn Boyd, former president of Alabama State University and Delta Sigma Theta sorority; valedictorian in 1973
• Artur Davis, former Democratic Congressman of Alabama
• Ladarius Gunter, former NFL player
• Michael Henig, former college football quarterback
• Glenn Howerton, actor, writer, and producer
• Jamey Johnson, country music singer and songwriter
• Robert Johnson, former NFL player
• Octavia Spencer (1988), actress
• Curtis Stewart, former NFL player
• George Teague, former NFL player
• George Thornton, former NFL player
• Lou Thornton, former MLB player
• Jasmine Walker, NBA player
• Davern Williams, former NFL player

Enrollment for 2007 was 1,508 students; 48 percent was male and 52 percent was female. Ethnicities enrolled at the school were white, black, and Hispanic. African-American enrollment was 94 percent, white enrollment was 2 percent, Hispanic enrollment was 2 percent, and Asian enrollment was 1%.

• School website