A brake apparatus for a vehicle may include a master cylinder unit including a master cylinder, which has first and second outlets and is configured to generate braking hydraulic pressure by receiving the operating force of a brake pedal, and a storage tank configured to store brake oil and supply the same to the master cylinder; a hydraulic pump unit, which is configured to generate braking hydraulic pressure and which includes multiple hydraulic pumps installed to alternately perform a suction operation and a discharge operation; a wheel cylinder unit configured to brake vehicle wheels by receiving the brake hydraulic pressure from the master cylinder unit or the hydraulic pump unit; and first and second flow path units configured to supply the braking hydraulic pressure to the wheel cylinder unit by respectively connecting the first outlet and the second outlet of the master cylinder unit with the wheel cylinder unit.