The Passerby Museum is an itinerant institution dedicated to presenting temporary exhibitions in different cities around the globe.  This nomadic organization draws its collection from donations from the people who visit, work or live in the area where it is in operation at any given time, serving as a physical marker that records the presence of its collaborators through the objects donated.

The Passerby Museum is an itinerant institution created in New York in 2002 by María Alós (b. Cambridge, MA, 1973) and Nicolás Dumit Estévez (b. Dominican Republic, 1967). It has been presented in NYC: in Lower Manhattan (LMCC), Times Square (Chasama) and the South Bronx (Longwood Arts Project at Hostos University); in México City: (MUCA Roma and UNAM Campus): in Madrid: (Madrid Abierto, ARCO’05); in Cuba: (Ninth Havana Biennial) and Puebla, México: (Plataforma 2006). The Museum's collection (over 3,000 objects) was exhibited in its entirety in 2006, when it attracted  more than 32,000 visitors to the Galería del Ayuntamiento in Puebla, Mexico during the month it was on view.