A regional election took place in Brittany on March 16, 1986, along with all other regions.

Party%Seats RPR-UDF44.00%41 Miscellaneous Right5.90%4RPR-UDF 49.9%45 PS-PCF-PRG-Les Verts32.6%30 PCF7.00%4 Presidential Majority0.70%0Left 40.3%34 FN4.90%2 The Greens2.40%0 LCR-LO0.80%0Others1.70%0Total100.00%83