Peter Kenneth Latz (born 1941) is an agrostologist, botanist, ethnobotanist, and author from Central Australia. For 55 years he worked with the Eastern and Western Arrernte, Alyawarre, Anmatyerre, Pintupi/Luritja, Pitjantjatjara/Yankunytjatjara, and Warlpiri people to organise and share their cultural and scientific knowledge of central Australian plants. In many areas of Australia this knowledge has been lost, but it has been preserved in the Red Centre as a result of this lifelong collaboration. He has published articles and books on Australian plants, particularly on arid grasses and vegetation and Aboriginal plant use.