P30 or P-30 may refer to: * Consolidated P-30, a 1930s United States two-seater fighter aircraft * Heckler & Koch P30, a semi-automatic handgun * Huawei P30, a smartphone * P30 (Latvia), a regional road * p30, an actin-binding protein * Prostate specific antigen, also known as P-30 antigen * Monthly summary of Employers Taxes form in Ireland (see Revenue On-Line Service) * P30, a patrol boat of the Armed Forces of Malta formerly the East German minesweeper Ueckermuende, now decommissioned. * P-30 radar, a 2D E band/F band radar * Papyrus 30 or P30, an early copy of the New Testament in Greek * Phosphorus-30 (P-30 or 30P), an isotope of phosphorus