Elrigh Louw (born (1999-09-20)20 September 1999) is a South African rugby union player for the Southern Kings in the Pro14.
He can play as a lock or flanker. Louw attended and played rugby for Hoërskool Transvalia, which earned him a selection to the Falcons squad for the Under-18 Craven Week.
After school, Louw moved to Bloemfontein to join the Free State Cheetahs, representing them at Under-19 and Under-21 level.
He was also called up to the South Africa Under-20 squad, representing them at the 2019 World Rugby Under 20 Championship in Argentina.In 2019, Louw joined the Port Elizabeth-based franchise the Southern Kings.
He made his first class debut in the opening round of the 2019–20 Pro14 season, coming on as a replacement their 27–31 defeat to the Cardiff Blues.
In his second appearance the following week, he scored his first senior try in a 20–31 defeat to Munster.