John Lanzendorf

John J. Lanzendorf (1946 – May 27, 2022 ) was an American hairstylist who amassed one of the world's largest collections of dinosaur-themed artwork. The collection is now owned by the Children's Museum of Indianapolis.

Lanzendorf grew up in Spooner, Wisconsin and attended cosmetology school. A lover of animals, Lanzendorf kept Grand Basset Griffon Vendéen dogs as well as rare parrots, cockatoos and macaws. After recovering from cancer in the early 1990s, he started purchasing sculptures, paintings, and drawings from some of the best-known paleoartists, such as James Gurney, John Gurche, and Michael Skrepnick. By 2000, he owned about 500 pieces,

In 2000, Chicago's Field Museum of Natural History displayed about seventy of Lanzendorf's Tyrannosaurus sculptures and paintings to complement the grand opening of their Sue the Tyrannosaurus exhibit. The book included a foreword by paleontologist Philip J. Currie and commentaries on the collection from other dinosaur researchers.

Lanzendorf sold his dinosaur collection to the Children's Museum of Indianapolis in 2001. He then redecorated his apartment with Asian art. Lanzendorf told an interviewer that he developed an interest in Asian artifacts after visiting fossil sites in Mongolia,

After being diagnosed with pancreatic cancer, Lanzendorf died at 76 years old on May 27, 2022, due to complications from surgery at Northwestern Memorial Hospital.