Andrewsiphius is an extinct remingtonocetid early whale known from the Eocene (Ypresian-Lutetian, 55.8 to 40.4 million years ago) of Gujarat and Kutch, India and Balochistan, Pakistan. Andrewsiphius is similar to but smaller than Kutchicetus (another remingtonocetid); synonymized them, and proposed a new subfamily, Andrewsiphiinae, for the two species. Later authors, however, still accept both as separate genera. Andrewsiphius is, compared to the remgintonocetids Remingtonocetus and Dalanistes, smaller, has a narrower rostrum, and smaller premolars separated by longer diastemata.