Andrew Hall and Matthew Spriegel will not be offered contracts by Northamptonshire for the 2015 season.
Hall leaves the club after a lengthy stint at the County Ground having made his debut in 2007 and captained the side for three seasons between 2010 and 2012.
Spriegel joined the County from Surrey in 2012 and was an ever-present in the t20 winning team in 2013.
Chief executive David Smith said: “These are always difficult decisions to make regarding players’ futures, but they are always made in the best interests of moving the club forward over the next few years.
“The club wishes to place on record its sincere thanks to both players for their commitment throughout what has been a difficult summer for everyone connected with Northants Cricket.”