You posed this question in Rentals, so we will answer with that assumption. Some of the Norman companies who manage properties are as follows:
Sterling Property Management
Century 21 Goodyear Green
Google their names and you should get their websites, with available lease options. Since the tornados, there are not a lot to choose from at the moment. Please avoid the craigslist options where they want you to send money out of town, prior to viewing the home. If there is a "for sale" sign in the yard, it is probably NOT for rent.
Best of luck in your search!