The French Air Force also ordered 20 Mirage F1Bs, a two-seat operational conversion trainer; these were delivered between October 1980 and March 1983.
The extra seat and controls added only 30 cm (12 in) to the length of the fuselage, but at the cost of less internal fuel capacity and the loss of the internal cannon.

The empty weight increased by 200 kg (440 lb), partly due to the addition of two Martin-Baker Mk 10 zero-zero ejection seats, in place of the Mk 4 used in the F1C, which had a forward speed limitation.

In all other aspects the F1B is a combat-capable aircraft and it can compensate for lost capacity with cannon pods and drop tanks.

Mirage F1BD : Export version of the Mirage F1D for Libya.
Six delivered 1978–1979.

Mirage F1BE : Mirage F1B for Spain, local designation CE.14A. Six delivered 1980–1981.

Mirage F1BJ : Mirage F1B for Jordan.
Two built.

Mirage F1BK : Export version of the Mirage F1B for Kuwait.
Two built.

Mirage F1BK-2 : Multi-role two-seater for Kuwait, equivalent to F1Dl.
Four built.

Mirage F1BQ : Two-seat trainer for Iraq, some of which fitted with dummy flight refuelling probe.
18 ordered of which 15 were delivered between 1980 and 1989.
The French Air Force also ordered 20 Mirage F1Bs, a two-seat operational conversion trainer; these were delivered between October 1980 and March 1983. The extra seat and controls added only 30 cm (12 in) to the length of the fuselage, but at the cost of less internal fuel capacity and the loss of the internal cannon.
The empty weight increased by 200 kg (440 lb), partly due to the addition of two Martin-Baker Mk 10 zero-zero ejection seats, in place of the Mk 4 used in the F1C, which had a forward speed limitation.
In all other aspects the F1B is a combat-capable aircraft and it can compensate for lost capacity with cannon pods and drop tanks.
Mirage F1BD : Export version of the Mirage F1D for Libya. Six delivered 1978–1979.
Mirage F1BE : Mirage F1B for Spain, local designation CE.14A. Six delivered 1980–1981.
Mirage F1BJ : Mirage F1B for Jordan. Two built.
Mirage F1BK : Export version of the Mirage F1B for Kuwait. Two built.
Mirage F1BK-2 : Multi-role two-seater for Kuwait, equivalent to F1Dl. Four built.
Mirage F1BQ : Two-seat trainer for Iraq, some of which fitted with dummy flight refuelling probe. 18 ordered of which 15 were delivered between 1980 and 1989.
Dassault Mirage F1