As of 2016, some places to find Joann Fabrics coupons include the Joann Fabrics' website and RetailMeNot. All of these places are online and offer coupons without registration.
At the Joann Fabrics' website, there is a page dedicated to coupons. Many of the coupon codes can only apply one at a time on different orders. Some of the coupons are only good for use inside the store. There are coupons for free shipping and a percentage off of certain types of items.
RetailMeNot provides promo codes for use on Joann Fabrics' website only and not physical stores. Each coupon includes the date it arrived on RetailMeNot.com and includes percentage of customers who used the coupon without any problems.