The seamer, Andrew Harris, and the allrounders Wayne White and Jigar Naik have extended their contracts to stay with Leicestershire.
Harris, 36, has signed for another season after finishing as the county's leading wicket-taker with 35 scalps in 2009, while White, 24, and Naik, 25, have agreed new two-year deals.
"AJ is a good senior bowler and Wayne is a talented player who has a lot going for him and will only get better," said Leicestershire's chief executive, David Smith. "Jigar has also made good progress. He scored a century against Derbyshire and his bowling was outstanding."