The Rexx Language Association is an independent, non-profit organization dedicated to promoting the use and understanding of the Rexx programming language. RexxLA manages several open source implementations of the Rexx language.The 2019 yearly RexxLA symposium was held 22-25 September 2019, in Hursley Park, UK, the birthplace of Rexx. This Proceedings publication contains interesting and informative presentations on the Rexx Programming language, in all its variants.The RexxLA website can be found at https://www.rexxla.org