1. General
- International Olympic Committee; www.olympic.org
- International Paralympic Committee; www.paralympic.org
- Olympic World Library; library.olympic.org
2. Olympic Games
- Tokyo 2020; www.tokyo2020.jp
- Beijing 2022; www.beijing-2022.cn
- Paris 2024; www.paris2024.org
- Milan – Cortina 2026; www.milanocortina2026.coni.it
- Los Angeles 2028; www.la28.org
3. Youth Olympic Games
- Lausanne 2020; www.lausanne2020.com
4. Miscellaneous
- GamesBids; www.gamesbids.com
- Around The Rings; www.aroundtherings.com
- Inside The Games; www.insidethegames.biz
- World Union of Olympic Cities; www.olympiccities.org
- International Society of Olympic Historians; www.isoh.org
- Olympic Broadcasting Services; www.obs.tv