2022–23 Ulster Rugby season

The 2022–23 season was Ulster Rugby's 29th season since the advent of professionalism in rugby union. They competed in the United Rugby Championship and the European Rugby Champions Cup. It was Dan McFarland's fifth season as head coach.

Ulster made a strong start to the URC season, going into the autumn international break second in the table, having beaten the Lions and Munster away and only lost to Leinster at home. Their away match against the Sharks was postponed after an outbreak of E.coli and norovirus. After comfortable win against Zebre, Ulster opened up a halftime lead away to Leinster, before the 14-man Leinster came back to win. There followed an abject 36–0 away defeat to Sale Sharks in the Champions Cup, after bad weather disrupted travel. The following week's home tie against La Rochelle was subject to a last-minute relocation to Dublin's Aviva Stadium, behind closed doors, because of a frozen pitch at Ravenhill. La Rochelle built up a 29-0 haltime lead, but Ulster recovered enough for a losing bonus point. After an away win against Connacht, Ulster lost to Munster and Benetton, lost to La Rochelle, and finally beat Sale and an under-strength Stormers at home, going into the Six Nations break third in the URC and in the round of 16 in the Champions Cup. After defeating the Sharks in the rearranged fixture, Ulster became the first European team in the URC to win all four fixtures against South African opposition by beating the Bulls at home. They lost their Champion's Cup knockout match against Leinster, but secured second spot in the URC table with five straight wins. That would have guaranteed a home semi-final had they won the quarter-final, but they lost it to Connacht.

Ulster's top scorer was scrum-half John Cooney with 154 points. Hooker Tom Stewart was top try scorer with 17 in all competitions, including a record 16 in the URC. He was named Ulster's player of the year, supporters club player of the season, and the URC Next-Gen Player of the Season. Stuart McCloskey was rugby writers' player of the season, and Stewart Moore was young player of the season. Lock Harry Sheridan and centre Jude Postlethwaite made their debuts this season. Hooker Rob Herring became the most-capped Ulster player, reaching 229 appearances for the province.

Ulster women finished last in the IRFU Women's Interprovincial Series. Centre Kelly McCormill was Ulster women's player of the year, and prop Sadhbh McGrath was young women's player of the year.

In the All-Ireland League, City of Armagh were promoted after topping Division 1B, Queen's University were promoted after topping Division 2A, and Instonians were promoted after topping Division 2C. Banbridge and Malone were both relegated from Division 1B. Ulster junior champions Clogher Valley were promoted to senior level after winning the provincial playoffs.