Jon Moncayola Tollar (born 13 May 1998) is a Spanish professional footballer who plays for Osasuna as a central midfielder.
Moncayola was born in Garínoain, Navarre, and was a CA Osasuna youth graduate. He made his senior debut with the farm team in the 2017–18 season, in Tercera División; during the campaign he also appeared with the reserves in Segunda División B.
On 3 June 2019, Moncayola renewed his contract with the club until 2021. He made his professional – and La Liga – debut on 17 August 2019, starting in a 1–0 away defeat of CD Leganés.
On 28 November 2019, Moncayola further extended his contract until 2024, and scored his first professional goal three days later, netting his team’s third in a 4–2 away defeat of RCD Espanyol.
On 8 June 2021, Moncayola signed a new ten-year contract with Osasuna, running until June 2031. Osasuna also confirmed that his release clause would be €22m (£18.9m) for the next two seasons, before being reduced to €20m for the eight following campaigns.