There are 5 Swingline coupons that include promo codes and free shipping deals for May 2019 for you to choose from. Our top coupon for today is a 5% Off coupon code. You can use your coupon to save on staplers and office supplies at Swingline. A trusted name in office products, Swingline provides quality staplers in great colors and designs. Shop for your home or office and get a great deal on Swingline.