There are 15 words that start with 'marti'.
| martin | martial | martian | 
| marting | martini | martins | 
| martians | martinet | martinis | 
| martially | martinets | martingal | 
| martingale | martingals | martingales | 
Note: These 15 words that start with 'marti' are found from the USA & Canada version of the tournament Scrabble word list.