John Harper (29 May 1872 – 15 April 1912) was a Scottish Baptist pastor who died in the sinking of the RMS Titanic in the North Atlantic Ocean.

[2] At the time of the Titanic disaster, Harper was 39, a widower with a six-year-old daughter, Annie Jessie (Nana), and pastor of Walworth Road Baptist Church in London.

He was traveling with his daughter and his sister, Jessie W. Leitch, to Chicago to preach for several weeks at the Moody Church, where he had been guest minister the previous fall, when the ship hit an iceberg on the night of 14 April 1912, and was lost.

His daughter and niece were put on a lifeboat and survived, but Harper stayed behind and jumped into the water as the ship began to sink.

Some who survived told that Harper preached the Gospel to the end (especially Acts 16:31), first aboard the sinking ship and then afterward to those in the freezing water before dying in it himself.