  Throughout his entire mathematical life, Ramanujan loved to evaluate definite
integrals. One can find them in his problems submitted to the \emph{Journal of
the Indian Mathematical Society}, notebooks, Quarterly Reports to the
University of Madras, letters to Hardy, published papers and the Lost Notebook.
His evaluations are often surprising, beautiful, elegant, and useful in other
mathematical contexts. He also discovered general methods for evaluating and
approximating integrals. A survey of Ramanujan's contributions to the
evaluation of integrals is given, with examples provided from each of the
above-mentioned sources.
