this study aims to know the 4Cs skills, as a mandatory principal of curriculum 2013, in two English Textbooks which used as references in teaching and learning process for eleventh grade. The two English Textbooks studied are "Bahasa Inggris" and "Contextual English". This research apply content analysis principles. To get the data the researcher used document analysis. After analysis, the data were interpreted, compared and reported. The research finding shows that 4Cs skills from both English Textbooks are included on its package of activities; 1) pre activities, 2) content of the materials, and 3) worksheets. The critical thinking aspects are mostly found on its pre-activity and contents, while communicative and collaborative aspects sometimes emerge on both. The worksheet requires creativity of the students as well as communicative and collaborative aspects on it. It was also found that among two English Textbooks studied, the 4Cs aspects on "Contextual English Textbooks" are shown up more frequent than "Bahasa Inggris" text book.