Haliotis dalli, common name the Galápagos abalone, is a species of sea snail, a marine gastropod mollusk in the family Haliotidae, the abalones. It has been confused in the past with Haliotis pourtalesii Dall, 1881, that occurs off Florida. This was due to the destruction of the holotype of Haliotis pourtalesii in the Great Chicago Fire of 1871.

Haliotis dalli dalli Henderson, 1915 Haliotis dalli roberti McLean, 1970 (synonym: Haliotis roberti McLean, 1970)

Description The description given by W.H. Dall in 1889 of Haliotis pourtalesii matches exactly the description used in 1915 by J.B. Henderson in describing Haliotis dalli, with W.H. Dall agreeing. "The small shell has a pale brick-red color, with white dots on some of the spirals. The shell is rather elevated, with about two and a half whorls. The apex is small and prominent. It contains about 25 holes of which five remain open. The margins of these are rather prominent. Outside the row of holes the usual sulcus is strongly marked.