CP3 or CP-3 may refer to:
People Chris Paul (born 1985), American basketball player in the NBA Candace Parker (born 1986), American basketball player in the WNBA
Other uses CP3 (classification), a disability sport classification specific to cerebral palsy The Center for Prevention Programs and Partnerships, a division of the United States Department of Homeland Security Child's Play 3, a 1991 American horror film Chicago Pile-3, the world's first heavy water reactor Complex projective space (), in mathematics Mercury-manganese star, a class of chemically peculiar stars CP3: an EEG electrode site according to the 10–20 system (EEG) Riviera MRT/LRT station, MRT station code CP3