American textile companies have shown a great deal of interest in the Murata Vortex Spinner (MVS) since its introduction at the 1997 OTEMAS show. Several U.S. companies either have full production plants with MVS, have a sample MVS machine, or are contemplating the purchase of MVS machines. This work provides a first look at yarn quality indexes for MVS yarns. Most of the yarn test results used in the development of tentative yarn quality indexes were shared by Murata, and a few yarns were tested at the Institute of Textile Technology (ITT); in all, test results from 24 lots of 100% cotton MVS yarns were used in this work. Both carded and combed yarns were included, with the count range of 12/1 to 50/1. The manner in which MVS yarn compares to ring and open-end yarns is similar to the manner in which MJS yarn compares to ring and open-end yarns.