The eleventh workshop on Integrable Systems will be held at the School of Mathematics and Statistics at the University of Sydney on 30 Nov-1 Dec 2023. These dates precede the 67th Annual Meeting of the Australian Mathematical Society, held in Brisbane, 5-8 December 2023. The workshop is organised by Harini Desiraju, Nalini Joshi, Milena Radnovic, Pieter Roffelsen. Please visit the workshop web site for more information: https://www.maths.usyd.edu.au/u/integrable/