Lucien Lawrence "Lou" Cunningham (4 June 1889 – 23 March 1948) was an Australian farmer and politician.

[1] Cunningham was president of the local branches of the No Conscription League and the Australian Labor Party, and, having failed to enter the New South Wales Legislative Assembly in 1917 via the seat of Gough,[2] he defeated Labor defector William Webster in 1919 to take the seat of Gwydir in the Australian House of Representatives.

Cunningham was nominated as Deputy Speaker in 1931, but Charles McGrath refused to resign and the move failed.

Unlike many colleagues, Cunningham remained loyal to the Labor Party through its many splits, and (being tall and around 108 kg) was nicknamed "the Goonoowigall Giant" and "Australia's biggest cabinet minister".

Cunningham retained the seat until his death on 23 March 1948 of a coronary occlusion; he was survived by his wife and two sons.