Hull forwards Josh Bowden, Dean Hadley and Chris Green have all agreed new contracts that will keep them at the club until the end of 2019 while stand-off Jordan Abdull has joined Featherstone on loan.
Black and Whites coach Lee Radford is delighted to retain the services of Bowden, 24, Green, 26, and Hadley, 23, who are all Hull-born and came through the club's academy.
"We've been really impressed with their progress as individuals and as a collective they have started to push the club forward," Radford said.
"At clubs such as Wigan and St Helens, they endeavour to build success with local lads and that is what we want to do here.
"I believe with the likes of Chris, Dean and Josh, alongside other Hull boys such as Danny Houghton, Scott Taylor and Jamie Shaul amongst others, we can emulate that.
"From day one, I have aimed to fill the team with local players with an injection of overseas internationals and I think we are starting to see that form."
Meanwhile, 20-year-old Abdull will spend the next month with Championship club Featherstone after being restricted to just two Super League appearances so far this season.
Rovers coach Jon Sharp said: "I've followed Jordan's progress very closely over the years and he is a mature player showing skill and poise way beyond his years, playing in what is a pivotal position on the pitch.
"He has a big future in the game and I'd like to thank Lee Radford and Motu Tony for their help in making this happen."