Leonard Peikoff (born 1933) is a leading Objectivist who calls himself "the world's foremost authority on Ayn Rand's philosophy." Born in Winnipeg, Canada, he later became a naturalized U.S. citizen. He was a friend of Rand since 1951 and became heir to her estate after she died in 1982. In 1991 his book Objectivism: The Philosophy of Ayn Rand was published.