1938 in professional wrestling describes the year's events in the world of professional wrestling.

Only one promotion held notable shows in 1938.

• Debut date uncertain:
  • Al Costello^[7]
  • Cavernario Galindo^[7]
  • Maurice Tillet^[7]
• April 3 – Murciélago Velázquez^[7]

• January 10 – Steve Veidor
• January 15 – Estrella Blanca^[8] (died in 2021)
• January 21 – Sandy Barr^[8](died in 2007)
• January 23 – Giant Baba^[8](died in 1999)
• March 1 – Chris Markoff (died in 2024)
• April 22 – Omar Atlas
• April 28 – Argentina Apollo (died in 1984)
• June 4 – Wrestling Pro (died in 2019)
• June 19 – Wahoo McDaniel^[9](died in 2002)
• July 25 – Freddie Sweetan (died in 1974)
• August 2 – Ángel Blanco^[10](died in 1986)
• August 13 – Brian Maxine
• August 28 – Jody Hamilton^[8] (died in 2021)
• September 18 – Billy Robinson^[8](died in 2014)
• September 24 – Tommy Seigler (died in 2023)
• September 29 – Ann Casey (died in 2021)
• October 16 – Bulldog Bob Brown (died in 1997)
• October 26 – Ron Wright (died in 2015)
• November 3 – The Beast^[8](died in 2009)
• November 19 – Ted Turner^[8]
• November 28 – Ernie Ladd^[8](died in 2007)

• June 10 – Frank Speer^[11] (31)