Shiloh High School is a public high school located in Snellville, Georgia, United States, in southern Gwinnett County.

The school is part of the Gwinnett County Public Schools system and opened in 1984.

It serves students in the Shiloh Cluster, which feeds from the Anderson Livsey, Annistown, Centerville, Partee, and Shiloh Elementary Schools and Shiloh Middle School.

Shiloh, like Peachtree Ridge, was on block scheduling, and until the 2015-2016 school year, was on a regular six-period day starting 2008-2009, but is now again on a block schedule.

Shiloh was also approved for the Career-Related Certificate, which is a fork of the original IB program.