Our SIOP 2028 Annual Congress will be held from 13 – 16 September, 2028 in Istanbul, Türkiye. More information to follow closer to the congress year.

Our SIOP 2027 Annual Congress will be held from 8 – 11 September, 2027 in Sydney, Australia. More information to follow closer to the congress year.

San Antonio, USA, September 15 – 18, 2026

Amsterdam, the Netherlands, October 20 – 23, 2025