Officials say the incident happened around 9 p.m. Thursday in the 1400 block of Dousman Street.
The homeowner heard a door being kicked in. Officials say when she went to see what was going on, there was a man in her living room with a mask and holding a long gun.
Officials say the man told her to get on the ground, but she was able to lock herself in a bedroom and call police.
The man left the scene. No one was injured.
If you have information, you can call Green Bay Police at 920-448-3208.