Riverside High School is a secondary school for grades 7 through 12 in Lake City, Arkansas, United States. It is the sole high school serving the Riverside School District.

Riverside High School is located in Lake City, alongside the Riverside West Elementary. The building was constructed in 2011 and houses grades 7–12. In 2020 an indoor baseball/softball complex was constructed on campus in-between the softball and baseball fields.

The assumed course of study for students follows the Smart Core curriculum developed by the Arkansas Department of Education (ADE). Students complete regular (core and career focus) courses and exams and may select Advanced Placement (AP) coursework and exams that provide an opportunity for college credit before graduation.

Riverside's READ program allows students to obtain an associate degree through Black River Technical College simultaneously with their high school diploma, free of charge.

The Riverside High School Student Council is made up of three representatives from each grade (7-12). Each member is chosen through popular vote.

The school's teams, known as the Riverside Rebels, with maroon and gray serving as the school colors. For 2012–14, the Rebels compete in 2A Classification from the 2A Region 3 Conference as administered by the Arkansas Activities Association. Teams are fielded in golf (boys/girls), bowling (boys/girls), basketball (boys/girls), baseball, softball, tennis (boys/girls) and track and field (boys/girls).

• Tennis: The girls tennis team has won four state championships (2008, 2010, 2011, 2012).

• Bart Barber - President of the Southern Baptist Convention
• John Ray Grisham Sr. - Father to famed novelist John Grisham
• Jon Milligan - Arkansas State Representative
• Gavin Stone - Major League Baseball Pitcher for the Los Angeles Dodgers
• Wes Ward - Arkansas State Secretary of Agriculture

• Official website