P30 or P-30 may refer to:
Automobiles BRM P30, a British racing car Toyota Publica (P30), a Japanese subcompact car
Military Consolidated P-30, a fighter aircraft of the United States Army Air Corps , a ship of the Ghana Navy Maltese patrol boat P30 Grendel P30, an American pistol in production 1990–1994 Heckler & Koch P30, a German pistol in production since 2006 , a corvette of the Indian Navy P-30 radar, a Soviet radar system
Science p30 (protein), an actin-binding protein Phosphorus-30, an isotope of phosphorus Pioneer P-30, a failed space probe Prostate specific antigen
Smartphones BenQ P30, introduced in 2004 Huawei P30, introduced in 2019
Other uses P30 (Latvia), a regional road Papyrus 30, a biblical manuscript
See also P3O, with a letter O instead of a zero