McCrossan Boys Ranch is a private nonprofit residential program in Sioux Falls, South Dakota. The ranch describes itself as serving boys and young men ages 11 to 20 who have experienced conflict in their lives, with programming focused on values, goals, education, life skills, and preparation for life outside the ranch (McCrossan Boys Ranch).

Its public program materials describe group care, transitional programs, and independent-living preparation. A South Dakota Department of Social Services license for 2024-2025 authorized McCrossan Boys Ranch to operate a group care center for up to 48 male children ages 9 to 17 at 47135 260th Street in Sioux Falls (programs, South Dakota DSS license).