This review aims to provide information on the prevalence and frequency of adult males' pornography use. It appears, the majority (> 80%) of adult men have accessed pornography at some point, and in the past year (40-70%). Around half of younger men (25 or under) are weekly consumers. Pornography use tapers-off with age. Relatively few (<10%) younger men have accessed violent pornography in the past year. The Internet is the primary method of access. Pornography use is associated with masturbation; use during partnered sex is less common. Differences in consumption rates between heterosexual and gay and bisexual men are discussed.