Klein Collins High School is a public high school located at 20811 Ella Boulevard in unincorporated Harris County, Texas, United States.

The school, with a Klein, Texas postal address, serves students in grades 9 through 12, as part of the Klein Independent School District.

The school's official student newspaper is the Legacy Press.

RWS Architects designed the now 602,000-square-foot (55,900 m2) campus and Marshall Construction Company, who received the contract to build Klein Collins on May 10, 1999, built the campus at an approximate cost of $52,000,000 exclusive of furniture and equipment.

43.1% of students were Economically Disadvantaged, 11.2% received Special Education, and 8.5% were English Learners.