Editors Note These publishers offer magazines that they publish. They may help you get a idea of what to look for. Remember a directory of magazines may cost a few hundred dollars to rent or thousands to buy. They may have over a million listings global. These directories may be available at your local library to view for free. You may find a magazine directory for a specific topic for about $30 to $1,200. Get technical and then more technical when searching for your magazine industry. (example) oil and gas exploration - then get more technical - refining and more. And also if there is a manufacturing process or a piece of machinery , there is probably a magazine. Some websites offer a partial list of magazines related to their industry . If you cant find magazines in your trade then maybe you can start your own magazine list and make a website. If you compile a complete list of magazines in your industry , it can be published and sold as a directory