Kevin Stewart and Trent Alexander-Arnold have agreed deals until 2021, with reserve team striker Ben Woodburn’s contract taking him up to 2019.
Stewart, 23, has already made 17 appearances for the first team while Alexander-Arnold, 18, made his debut in last month’s EFL Cup victory over Tottenham.
Woodburn, 17, has featured in a couple of pre-season friendlies and continues to impress for the Under-23s.
“This is really positive news, of course, and it’s brilliant we have acted decisively to show our intent with our young players,” Klopp told liverpoolfc.com.
“With Kev it is may be a little different. He is of course established with us now and making a contribution as an important member of our first-team squad.
“Trent spends most of his time with the first team in this moment and is progressing each and every day.
“Ben is in those earlier stages and has a lot of developing to do still – but, wow, what an exciting talent he is.
“All three of these players are big talents and are at different stages of their development, but it is development that is key and they must continue to learn and improve to achieve their full potential.”