There are 15 words that start with 'jacks'.
| jacks | jackstay | jackscrew |
| jackshaft | jacksmelt | jacksnipe |
| jackstays | jackstone | jackstraw |
| jackscrews | jackshafts | jacksmelts |
| jacksnipes | jackstones | jackstraws |
Note: These 15 words that start with 'jacks' are found from the USA & Canada version of the tournament Scrabble word list.