The new contracts will see both remain at the current Championship Champions until the end of 2015 season.
Turner joined the Eagles ahead of the 2012 season from fellow Championship outfit Dewsbury and so far has 38 appearances, scoring 22 tries.
The former Castleford winger has formed a prolific partnership with centre Menzie Yere and will be looking to ensure his place in the squad for Friday’s match against London.
Duane Straugheir joined the Eagles at the same time, coming from York, and he too has made 38 appearances since making the move to South Yorkshire.
Speaking of the re-signings, Eagles Coach Mark Aston said, “I’m delighted Scott and Duane have committed their future to the club.
“Turner does the little things right we demand from players, he prepares himself correctly and importantly for us, he’s at the right age and will hopefully be here for a number of years.
“The same can be same for Straugheir, great player and he’s also an adaptable player, last year he played a number of games at centre and now he’s playing the back row and I think he can continue to develop here.
“Both have been in the Super League system, Turner at the Tigers and Duane up at Bradford and over the past year they’ve come on leaps and bounds.
“Both earned a spot in the side at the Grand Final last year and I know they are both itching for a place in the squad for the match this Friday.”