Sinclair Ntomuchukwu Armstrong (born 22 June 2003) is an Irish professional footballer who plays as a forward for EFL Championship club Bristol City and the Republic of Ireland national team.
Initially starting his career with Cherry Orchard, Armstrong went onto sign for Shamrock Rovers, featuring for their underage sides before making his senior debut, aged 15, in August 2018 in a 1–0 loss to Drogheda United in the FAI Cup.
[10] On 26 April 2022, Armstrong made his debut against Bromley,[11] before days later scoring his first goal for the club during a 3–1 home victory over Notts County.
[12] After an impactful pre-season ahead of the 2022–23 campaign, Armstrong was named in Queens Park Rangers' matchday squad for their first game of the season against Blackburn Rovers, in which he made his eventful debut featuring for the final 13 minutes in the 1–0 defeat.
[2] On 8 September 2023, he received his first call up to the senior Republic of Ireland squad for their UEFA Euro 2024 qualifier at home to Netherlands 2 days later.