There are dozens of different kinds of sub-organisations operating under TTYY:
- vocational clubs
- international clubs
- leisure clubs
- several sports clubs operating within TUrVoKe ry, the teekkari sports club.
The student union supports the sub-organisations in many ways:
- offering sub-organisation grants and project funding
- supplying club rooms and other tools
- offering advice in various problems such as rules updates and insurance matters.