- YTT stands for Yoga Therapy Teacher
- YTT stands for Yesterday, Today and Tomorrow
- YTT stands for Yesterday, Today, Tomorrow (plant)
- YTT stands for Young Talent Time (Australian TV show)
- YTT stands for Young Toba Tuff (volcanic eruption; Indonesia)
- YTT stands for District Barge, Torpedo Testing (US Navy)
- YTT stands for Yoshi Topsy-Turvy (video game)
- YTT stands for Yardcraft, Torpedo Testing Barge
Abbreviations And Their Meaning