The Tuscan regional election of 1975 took place on 15 June 1975.

Election was held under proportional representation with provincial constituencies where the largest remainder method with a Droop quota was used. To ensure more proportionality, remained votes and seats were transferred at regional level and calculated at-large.

The Italian Communist Party was by far the largest party. After the election Lelio Lagorio (Italian Socialist Party), the incumbent President of the Region, formed a new government with the Italian Communist Party. In 1978 Mario Leone, another Socialist, took over from Lagorio.^[1]

Parties		votes	votes (%)	seats
	Italian Communist Party	1,169,858	46.5	25
	Christian Democracy	717,338	28.5	15
	Italian Socialist Party	269,074	10.7	4
	Italian Social Movement	106,580	4.2	2
	Italian Democratic Socialist Party	97,649	3.9	2
	Italian Republican Party	66,704	2.7	1
	Proletarian Unity Party	51,834	2.1	1
	Italian Liberal Party	30,096	1.2	-
	Popular Unity	7.996	0.3	-
	Democratic Socialist Refoundation Union	488	0.0	-
Total		2,517,617	100.0	50

Source: Ministry of the Interior