In this contribution the author examines overcrowding, one of the chronic problems that affect the prison system in Peru. First, the topic of the growth of the prison population during a determined period of years is addressed. Then, the author discusses three options for avoiding or controlling overcrowding in prisons: sending fewer people to prison, increasing the release of prisoners, and expanding existing prisons or building new ones. Finally, the article presents alternative measures of limiting freedom other than sending people to prison, and proposes a long-term solution which includes the participation of different sectors of the Peruvian government.