What is if you accidentally follow someone on instagram and then unfollow will they know?

If you accidentally follow someone on Instagram and then quickly unfollow them, it is unlikely that they will receive a notification about your actions. Instagram sends a notification when someone starts following a user, but if you unfollow them immediately, they will not receive a corresponding notification that you unfollowed.

However, if the person was actively using Instagram at that moment, they could potentially see the follow notification before you unfollow them. Additionally, if they have a third-party app that tracks followers, they might be notified of the follow and subsequent unfollow actions.

It's also worth noting that if you send a follow request to a private account and then cancel it, Instagram currently does not notify the user about the canceled request.

To minimize the chances of someone noticing, it’s best to unfollow them as quickly as possible after the accidental follow.