Squats are a great exercise for your inner thighs, although they're more of a complete lower body exercise. If you're targeting your inner thighs specifically, get some ankle weights. Put them on and start in a standing position. Then, twist one ankle towards the other foot until you feel it in your inner thigh. This is kind of tricky to do, but it's a great way to specifically target that part of your leg. Switch your feet when you finish with the first foot.