Dayton Independent School District is a public school district based in Dayton, Texas (USA).
The district serves the cities of Dayton, Dayton Lakes, Kenefick, and some unincorporated areas including Eastgate, Stilson, and the northern half of Old River-Winfree. A very small portion of the district lies in neighboring Harris County.
In 2009, the school district was rated "academically acceptable" by the Texas Education Agency.
Former Dayton ISD trustee John Otto has since 2005 held the District 18 seat in the Texas House of Representatives, which encompasses Liberty, San Jacinto, and Walker counties.