The Hawk 50 was the original export trainer version, and offered a limited attack capability.
Finland, Indonesia and Kenya ordered 90 of this variant.

Hawk 51 – Export version for the Finnish Air Force.
50 ordered December 1977, with first four to be built by British Aerospace and remaining aircraft assembled in Finland.
Delivered December 1980 to September 1985.

Hawk 51A – Seven Hawks were sold to Finland as part of a follow-on order.
Powered by Adour 851 engine as used by Hawk 51, but with structural and wing modifications of later Hawks.

Hawk 52 – Export version for the Kenyan Air Force.
Fitted with braking parachute.
Twelve ordered 9 February 1978, with deliveries from 1980 to 1981.

Hawk 53 – Export version for the Indonesian Air Force.
Eight ordered 4 April 1978, with five more ordered in May 1981, a further three in October 1981 and four in November 1982, giving a total of 20 delivered between 1980 and 1984.
Five repurchased by BAE Systems in 1999.
The Hawk 50 was the original export trainer version, and offered a limited attack capability. Finland, Indonesia and Kenya ordered 90 of this variant.
Hawk 51 – Export version for the Finnish Air Force. 50 ordered December 1977, with first four to be built by British Aerospace and remaining aircraft assembled in Finland. Delivered December 1980 to September 1985.
Hawk 51A – Seven Hawks were sold to Finland as part of a follow-on order. Powered by Adour 851 engine as used by Hawk 51, but with structural and wing modifications of later Hawks.
Hawk 52 – Export version for the Kenyan Air Force. Fitted with braking parachute. Twelve ordered 9 February 1978, with deliveries from 1980 to 1981.
Hawk 53 – Export version for the Indonesian Air Force. Eight ordered 4 April 1978, with five more ordered in May 1981, a further three in October 1981 and four in November 1982, giving a total of 20 delivered between 1980 and 1984. Five repurchased by BAE Systems in 1999.
BAE Systems Hawk