MAZ-525 (BelAZ-525 from 1959) was a Soviet heavy truck produced by the Minsk Automobile Plant.

Initially, a guard was installed on the hood sides for safety while the engine was serviced, but it was later removed.

In 1954, the joint efforts of MAZ, Institute of Mining and Kharkov Trolleybus Depot developed a trolley dump truck equipped with two D-202 trolleybus electric motors with a total capacity of 172 kW (231 hp).

Also in 1959, the MAZ-525A tractor was developed as part of a road train with the 45-ton BelAZ-5271 semitrailer, but this did not enter production because the engine was not powerful enough.

In 1959, production was transferred to the Belarusian Automobile Plant, where the truck was produced until 1965 under the name BelAZ-525.