The duo, along with quick bowler Jamie Atkins, are all products of the club's Cricket Pathway
Sussex have handed Jack Carson, Henry Crocombe and Jamie Atkins two-year rookie contracts.
Nineteen-year-old Carson made a remarkable breakthrough into the first team in 2020, finishing as the club's highest wicket-taker in the Bob Willis Trophy.
The right-arm off-spinner claimed 15 wickets at 22.66, more than any other red-ball bowler at Hove.
Meanwhile, fellow-teen Crocombe claimed three wickets in his four first-class outings
Jamie Atkins, who is yet to make his senior debut for Sussex but has already piqued the interest of the England Lions, is also the recipient of a 24-month deal
Performance Director Keith Greenfield said: "Jack, Henry and Jamie are just three of a very exciting young crop of cricketers that are coming out of our academy system under Richard Halsall’s guidance.
"Jack and Henry have both shown that they will be valuable assets to Sussex Cricket going forward in the squad with their skill and character that has been clear to see, and Jamie will show us exactly the same when he gets his chance with his extra pace and bounce.
"All three have exciting futures ahead of them here at the club."
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