John Frederick Lillicrap (1866–1937) was the 29th Mayor of Invercargill from 1921 to 1923.

He was born in Wellington in 1866, and moved to Invercargill as a child.

His father Captain Vernon Lillicrap was in charge of the Immigration Barracks.

He was a lawyer, and also practised from 1929 to 1936 in Palmerston North.

He married Catherine Anne Wilson in 1899; they had one son and one daughter.