Henry Frederick Lorenz Kortlang or Harry Herbert Lorenz Kortlang, known as Bert J. Kortlang (12 March 1880 – 15 February 1961) was an Australian cricketer who also held US citizenship due to his father having been born in New York City. He played 17 first-class cricket matches for Victoria between 1910 and 1912, and 15 matches for Wellington in New Zealand between 1922 and 1927. He also played for an Australian XI in 1911 and for a New Zealand XI in 1924.