Motivations　for　pornography　use　may　vary　across　gender　identities,　sexual　orientations,　and　geographical　regions,　warranting　examination　to　promote　individual　and　public　health.　The　aims　of　this　study　were　to　validate　the　Pornography　Use　Motivations　Scale　(PUMS)　in　a　diverse,　multicultural　sample,　and　develop　a　short　form　(PUMS-8)　that　can　assess　a　wide　range　of　pornography　use　motivations.　Using　data　from　42　countries　(N　=　75,117;　Mage　=　32.07;　SDage　=　12.37),　enabled　us　to　thoroughly　evaluate　the　dimensionality,　validity,　and　reliability　of　the　Pornography　Use　Motivations　Scale　(PUMS),　leading　to　the　development　of　the　more　concise　PUMS-8　short　scale.　Additionally,　language-,　nationality-,　gender-,　and　sexual-orientation-based　measurement　invariance　tests　were　conducted　to　test　the　comparability　across　groups.　Both　the　PUMS　and　the　PUMS-8　assess　eight　pornography　use　motivations,　and　both　demonstrated　excellent　psychometric　properties.　Sexual　Pleasure　emerged　as　the　most　frequent　motivation　for　pornography　use　across　countries,　genders,　and　sexual　orientations,　while　differences　were　observed　concerning　other　motivations　(e.g.　self-exploration　was　more　prevalent　among　gender-diverse　individuals　than　men　or　women).　The　motivational　background　of　pornography　use　showed　high　similarity　in　the　examined　countries.　Both　the　PUMS　and　the　PUMS-8　are　reliable　and　valid　measurement　tools　to　assess　different　types　of　motivations　for　pornography　use　across　countries,　genders,　and　sexual　orientations.　Both　scales　are　recommended　for　use　in　research　and　clinical　settings.