Welcome to Oklahoma City! Whether you are a visitor to Oklahoma City or a lifelong resident, there is so much to do in this great town! Do you have an event in Oklahoma City? Post it on the Oklahoma City Annual Event Post for FREE! Are you hosting, participating in, or just know about an upcoming Oklahoma City event? The Oklahoma City Calendar of Events section on Annual Event Post showcases concerts, theatrical performances, things to do, art shows, craft fairs, parades, holiday happenings, and other fun Oklahoma City events. To post an event in your community, please login/signup. Your event will be posted immediately to the following Oklahoma City calendar of events!