Lucien Turcotte Pacaud (September 21, 1879 – March 5, 1960) was a Canadian lawyer and political figure.
He represented Mégantic in the House of Commons of Canada from 1911 to 1922 as a Liberal member.
He was born in Trois-Rivières, Quebec, in 1879, the son of Ernest Pacaud and the grandson of Joseph-Édouard Turcotte.
Pacaud was admitted to the bar in 1904 and practised at Quebec City and then at Thetford Mines.
In 1930, Pacaud served as acting Canadian High Commissioner to the United Kingdom after the death of Peter Charles Larkin.