Rub a dryer sheet over your suede couch. Dryer sheets, which help to reduce static electricity in clothing, also help to reduce static when rubbed on other surfaces as well.
Spray your couch lightly with a static reducing spray, which you can usually find in the laundry section of your local supermarket.
Place a cotton slip cover over your couch. Cotton is a fiber that is more resistant to static.
Wear clothing made of natural materials such as cotton. When you sit on the sofa, natural fibers are less likely to spark a static reaction.
Moisten the air in the room with a humidifier. If you don't have a humidifier, boil a pot of water on your stove if your kitchen is close to the room that houses the couch. Humid air conducts static electricity much less frequently than dry air.