https://www.professionalsaustralia.org.au/Professionals/Prof...
United Kingdom:
https://prospect.org.uk/tech-workers/
https://utaw.tech/
https://www.unitetheunion.org/what-we-do/unite-in-your-secto...
France: (Someone asking which of the many unions to join for SWE)
https://www.reddit.com/r/union/comments/1bcx6z6/which_union_...