Group One-winning Sydney jockey Adam Hyeronimus is facing multiple charges over betting offences.

Hyeronimus has been hit with 32 charges after a long-running Racing NSW stewards' investigation.

He will face an inquiry on Thursday and Friday when stewards will allege the jockey had an interest in 29 bets on horses he wasn't riding between June 22, 2016 and January 21, 2019.

The charges also include Hyeronimus having an interest in a $500 bet on Lucky Meteor, a horse he rode in a race at Canterbury on November 5, 2016.

A further charge alleges Hyeronimus had an interest in a $500 bet on another of his mounts, Limbo Soul, in a race at Rosehill on February 22, 2017.

Lucky Meteor finished third while Limbo Soul was successful, firming from $4 to start a $3.20 favourite to make a winning debut.

Hyeronimus has also been charged with giving false evidence to stewards during an an inquiry in May, 2019.

The hearing has been delayed because of an application from Hyeronimus' solicitor who wanted a NSW Court Of Appeal case between Racing NSW v Fletcher to be finalised before the case was heard.

The Racing NSW v Fletcher case involved the use of mobile telephone data, with a result handed down in February.

The COVID-19 pandemic added further delays.

Hyeronimus has been enjoying one of his best seasons with his Group One win on Shout The Bar in the Vinery Stud Stakes during the Sydney autumn carnival a career highlight.

He also rode Dawn Passage to Hawkesbury Guineas and Inglis 3YO Guineas victories.