\documentclass{beamer}\usepackage{multicol}\usepackage{makeidx} \newenvironment{theindex}{%\let\item\par % definitions for subitem etc\begin{multicols}{2}}{\end{multicols}}\newcommand\indexspace{} \makeindex \begin{document}\begin{frame}{test 1}\index{Laplace}Laplace transform is... \LaTeXe\ can make you happy!\index{Test}\index{A}\index{B}\index{C}\index{D}\index{E}\index{F}\end{frame} \begin{frame}{test 2}\printindex\end{frame}\end{document}