John Walter Lord Jr. was an American author, lawyer, copywriter and popular historian best known for his 1955 account of the sinking of the RMS Titanic, A Night to Remember.

A Night to Remember is a 1955 non-fiction book by Walter Lord that tells the story of the sinking of the RMS Titanic in 1912. The book was hugely successful, and is still considered a definitive resource about the Titanic. Lord interviewed 63 survivors of the disaster and drew on books, memoirs, and articles that they had written. In 1986, Lord authored his follow-up book, The Night Lives On, following renewed interest in the story after the wreck of the Titanic was discovered by Robert Ballard.