There are several things you can do to start looking for a dominant woman as a partner or a mistress.  First, we do not encourage anyone to use this information if they are in  relationship already but are too ashamed to admit their fantasies to their partner.

If this is you, pleaser refer to this article.

The number 1 resource online to find a dominant woman is fetlife.com

It is likely you will find many partners in your area, especially if you are in a large city.  Please use that site and any information you get on this site at your own discretion.  It is a great place to meet like minded kinky people like you and start friendships, and also to find a partner that likes to dominate men either exclusively or as one of many of their slaves.

For the most part, this site is dealing with relationships and relationship building and does not necessarily agree with some of the information put on this site for people that wish to take this further into the world of cuckolding, threesomes, orgies, or group parties.

Start with Fetlife and see where it takes you.