Stephen Frank Altschul (born February 28, 1957) is an American mathematician who has designed algorithms that are used in the field of bioinformatics (the Karlin-Altschul algorithm and its successors).
Stephen Frank Altschul (född 28 februari 1957) är en amerikansk matematiker som har designat algoritmer vilka använts i stor omfattning inom bioinformatiken (the Karlin-Altschul algorithm).