- Source: So Tough (song)
- Yoo Seung-ho
- Dandadan
- Justin Bieber
- Zico (penyanyi rap)
- Kim Hee-jung (pemeran, lahir 1992)
- Jung Yu-mi (pemeran)
- Han Hyo-joo
- Today is A Beautiful Day
- Conan Gray
- Demi Lovato
- So Tough (song)
- So Tough
- Carl and the Passions – "So Tough"
- Love's So Tough
- Not So Tough Now
- I'm Not So Tough
- Tough guy hardcore
- All This Is That
- Planet Waves
- Benee
So Tough is a song written by Gary Mears, and recorded by both the Original Casuals and The Kuf-Linx in 1958. Both versions charted. On March 17, 1958, Billboard listed "So Tough" as tied for Number 76 on "Top 100 Sides for Survey Week Ending March 8". On February 19, 1958, the Casuals performed the song on American Bandstand. The song topped out at #42 on the Hot 100 chart, and #6 on the Most Played R&B By Jockeys chart.