The 1970 NCAA University Division swimming and diving championships were contested at the 34th annual swim meet sanctioned and hosted by the NCAA to determine the individual and team national champions of men's collegiate swimming and diving among its University Division member programs in the United States, culminating the 1969–70 NCAA University Division swimming and diving season.

These championships were hosted by the University of Utah at the Ute Natatorium on its campus in Salt Lake City, Utah.

Two-time defending champions Indiana again topped the team championship standings, the Hoosiers' third NCAA national title.

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