(This is a very slightly modified version of a preprint previously titled "A local description of the stable category") Title: Local subgroups and the stable category Author: Wayne W. Wheeler Address: Center for Communications Research, 4320 Westerra Court, San Diego, CA 92121 Date: February 2002 Status: To appear in Transactions of the AMS Abstract: If $G$ is a finite group and $k$ is an algebraically closed field of characteristic $p>0$, then this paper uses the local subgroup structure of $G$ to define a category $\mathfrak L(G,k)$ that is equivalent to the stable category of all left $kG$-modules modulo projectives. A subcategory of $\mathfrak L(G,k)$ equivalent to the stable category of finitely generated $kG$-modules is also identified.