Check Kno to Find Coupons, Sales or Promos

Currently there are no Kno coupons. If you find a Kno coupon code, deal or promo please use the "Submit Your Coupon" box on the right to let us know. You can also get an instant Deal Alert for new coupons by submitting your email address above.

Get alerts when we add new Kno coupons.

Past Kno Coupon Codes

These Kno promo codes have expired but may still work.


$5 Off Sitewide

Invite classmates to join Kno and get $5 off your next Textbook from Kno.
  • Invite your classmates by giving them $5 credit on their first purchase
  • Once they buy, you'll get $5 credit
  • There is no limit to how much you can earn
Activate Coupon