Alan Walker is an Australian word puzzle developer with a background in computing. He runs the popular Chihuahua Word Puzzle website as well as producing books of nine- and ten-letter word puzzles. He runs a number of other websites, and has created word games for mobile phones.
He has created websites featuring free electronic editions of books written by his parents: "No Sunlight Singing" (1960), a novel about Australian Aborigines, by Joe Walker; and "Solidarity Forever" (1972), about the life and times of Australian radical Percy Laidler, by Bertha Walker.
He lives in Melbourne, where he was born in 1950.