KPSO may refer to:

• Stevens Field (ICAO code KPSO)
• KPSO-FM, a radio station (106.3 FM) licensed to Falfurrias, Texas, United States

• Millsaps (disambiguation)
• Mills Archive
• Mills Blue Rhythm Orchestra
• Mills Bomb
• Mills bomb No. 36M
• Mills bomb No. 5
• Mills Brothers discography
• Mills Building
• Mills Building and Tower
• Mills Building (disambiguation)
• Mills Building (El Paso)
• Mills Building (New York City)
• Mills Building, New York City
• Mill scale
• Mills Cliff
• Mills College honorary degree recipients
• Mills College Honorary Degree Recipients
• Mills Commission
• Mills County Courthouse (Texas)
• Mills County (disambiguation)
• Mills cross antenna
• Millsdale station
• Mills (disambiguation)
• Mills District
• Mills District, Minneapolis, Minnesota