Does Google Maps notify you when someone views your location?
A direct answer, followed by the one notification feature Google Maps does offer.
No. Google Maps does not send a notification each time someone opens your shared location. It only sends alerts for arrivals and departures from a specific place, and only if that notification was set up in advance - regular views are silent.
Google Maps location sharing is silent by default: the person you shared with can open your location at any time, and you won’t know they looked.
The one exception
Per Google’s own Location Sharing help pages, you can set up a notification for when someone arrives at or leaves a specific place, like home or work. That’s a place-based alert, not a general “someone viewed you” notification - and it has to be configured ahead of time, for a specific location, not turned on generally.
If you want to know
glancy was built around exactly this gap: every access to your location sends a notification, with no place-based setup required - see access notifications and how it compares in glancy vs. Google Maps.