| Union County Courthouse | |
| Designated Other1: | New Mexico |
| Designated Other1 Date: | August 22, 1975 |
| Designated Other1 Number: | 408 |
| Designated Other1 Num Position: | bottom |
| Coordinates: | 36.4494°N -103.1869°W |
| Architect: | D.P. Kaufman & Son |
| Builder: | Wooten & Bundy |
| Architecture: | World's Fair Classic Style |
| Added: | December 7, 1987 |
| Refnum: | 87000891 |
The Union County Courthouse on Court St. in Clayton, New Mexico is a historic building built in 1909. It has been described as having World's Fair Classic Style architecture. It was listed on the National Register of Historic Places in 1987.
The courthouse was one of 14 studied in a 1987 review of historic courthouses in New Mexico.[1]