Accorinding to wikipedia they have many different sources (https://en.wikipedia.org/wiki/Apple_Maps#Features https://en.wikipedia.org/wiki/Apple_Maps#Features):

Accorinding to wikipedia they have many different sources (https://en.wikipedia.org/wiki/Apple_Maps#Features https://en.wikipedia.org/wiki/Apple_Maps#Features): > The main provider of map data is TomTom, but data is also supplied by Automotive Navigation Data, Getchee, Hexagon AB, IGN, Increment P, Intermap Technologies, LeadDog, MDA Information Systems, OpenStreetMap, and Waze.