Killester Basketball Club is an Irish basketball club based in Dublin. The club's senior men's team play in the Super League and play its home games at IWA Sports Hall in Clontarf.
The club was established in 1967 by Michael Casey.
In 1973, Killester was an inaugural team in the Irish National League. Between 1975 and 1977, the team won three championships in a row. Between 2001 and 2014, they won five championships and three National Cup titles.
In the 2024–25 season, Killester won the National Cup for the first time since 2019. They went on to reach the 2024–25 Super League final, where they lost to UCC Demons.