This talk will introduce the labeled tuples language feature, which allows programmers to label tuple elements. It is conceptually dual to labeled function arguments, allowing programmers to give a helpful name to constructed values where labeled function arguments permit giving a helpful name to parameters. We present an overview of the design of this feature, arguments for and against its inclusion in the language, and describe a few possible variations and implementation considerations. We have implemented labeled tuples in Jane Street’s branch of the OCaml compiler - it has proven extremely popular and quickly found wide use in our code base.