Background. This study examined adolescent pornography viewing and its' relationship with condom attitudes. Methods. Data were from 457 adolescents aged 13-18 years old who completed an online survey assessing pornography viewing frequency and condom attitudes. Results. Many adolescents in our sample had viewed pornography in the past year (n = 188, 41%), with pornography viewing frequency being higher among older adolescents (P = 0.02), those who have had sex in the past year (P = 0.001), and those who identified as White (P = 0.01), LGB+ (P = 0.05), and male (P = 0.001). Adolescents who viewed pornography more frequently had more negative condom attitudes (r = -0.18, P < 0.001), and this relationship was invariant across age, gender, race/ethnicity, sexual orientation, and sexual intercourse status. Conclusions. A substantial proportion of adolescents in our sample viewed pornography and those who view more frequently had more negative condom attitudes. Results indicate a need for experimental studies examining this relationship and interventions addressing pornography literacy among adolescents.