Benzinga and Yahoo Finance LLC may earn commission or revenue on some items through the links below. Arnold Schwarzenegger has earned many titles in his life: Mr. Olympia, actor, California governor, and environmental activist, just to name a few. At age 78, he has another to add to his resume: billionaire. Schwarzenegger's net worth is around $1.2 billion, according to Forbes. A little less than half of that is from his movies and TV shows, from which he's made$500 million pre-tax. The rest, according t ...