Leslie Lewis Dan, CM OOnt (born November 26, 1929), is a Canadian-Hungarian businessman and pharmacist.
He then started a new company, Viventia (formerly Novopharm Biotech), which specializes in the discovery and development of products for the treatment of cancer.
As of April 2021, he has an estimated net worth of $1.04 billion Canadian dollars (approximately $830 million USD), making him the 91st richest person in Canada.
[citation needed] From the latter, Dan has noted writings in the Bava Bathra chapters, including: "Charity is equal in importance to all other commandments combined."
Aubrey Dan is president of Dancap Private Equity and Andrea Dan-Hytman is co-owner of Viventia Biotech Inc.