Warren Buffett has called The Intelligent Investor the best book on investing ever written. The rest of this list keeps company with it — written by, or widely read among, the founders and investors who built genuinely enormous businesses.
A list like this needs a caveat before it needs anything else: reading what very rich people read will not make you rich. The causation is mostly the other way round, and survivorship bias is doing enormous work in every list of this kind, including this one.
What makes it worth compiling anyway is the pattern. The recommendations that recur are rarely business books at all — they tend towards psychology, history, biography and the mechanics of decision-making under uncertainty, which is itself the interesting finding.
We only included titles that are genuinely and repeatedly recommended, rather than mentioned once in an interview, and only ones that stand up on their own merits. If a book is here purely because somebody famous named it, it is not here.