Yep. Mosquitos are family Culicidae under order Diptera (flies).
If you look at them closely, you can see the familial similarities. The two antennae-like protuberances from between the very large eyes. Only one set of fully-formed wings.
You can't tell from this photo, but the proboscis has a rectangular cross section! I wonder why that is?
Edit: Maybe it's because there are six needles in that proboscis!