There are 20 words that end with 'ko'.
| mako | bucko | bunko |
| dekko | gecko | iroko |
| jocko | pinko | shako |
| sicko | socko | wacko |
| gingko | jingko | shacko |
| stinko | whacko | chechako |
| pachinko | cheechako | |
Note: These 20 words that end with 'ko' are found from the USA & Canada version of the tournament Scrabble word list.