The purpose of this study is to validate the English version of the Social Networks Adoption Scale developed by Usluel and Mazman (2009). The original scale consists of 21 items and 5 factors that include usefulness, ease of use, social effect, facilitating conditions and community identity. An online sample of 109 Facebook users completed an internet version of the translated the scale from the USA, Germany, Turkey, and Canada. For the scale's structural validity, first and second order confirmatory factor analysis was conducted. Cronbach's Alpha coefficients (0.90) and item total correlations were calculated to investigate reliability of the scale. Through validity study it was proven that English version of the scale was consisted of five factors. But as a result of the second order confirmatory factor analysis, correlation between social influence variable and adoption variable was found to be insignificant. Therefore, two items included in the social influence factor were extracted from scale. The results indicated that the English version of the Social Networks Adoption Scale consisting of 19 items and 5 factors provided valid and reliable measures of social networks adoption. The Social Networks Adoption Scale can provide an insight to educators about the adoption process of international students from different cultures who seek to use Facebook for educational purposes. (C) 2015 Elsevier Ltd. All rights reserved.