Paul Dummett, Loris Karius and Matt Ritchie are among five players who will leave Newcastle when their contracts expire next month.
Defender Dummett, 32, the club's current longest-serving player, will leave after 23 years, having joined the academy aged nine and made 213 senior appearances.
Former Liverpool goalkeeper Karius, 30, joined in 2023 and made two first-team appearances, including the 2023 Carabao Cup final defeat by Manchester United.
Scotland midfielder Ritchie has scored 25 goals in 215 appearances since joining from Bournemouth in 2016 and played a key role in the Magpies' promotion from the Championship in 2017.