Klyachko Models for General Linear Groups of Rank 5 over a $p$-Adic Field This paper shows the existence and uniqueness of Klyachko models for irreducible unitary representations of $\GL_5(\CF)$, where $\CF$ is a $p$-adic field. It is an extension of the work of Heumos and Rallis on $\GL_4(\CF)$. Keywords:Klyachko models, Whittaker-symplectic modelCategory:22E50