The objective of this research is to analyze the relevancy aspect of English Textbook Bahasa Inggris for Grade XI second semester used in SMAN 3 Pariaman. Furthermore, the research design of this research is qualitative. In order to find out the relevancy aspect of English textbook 'Bahasa Inggris', the resource data is obtained from English textbook Bahasa Inggris for Grade XI second semester. The finding of the research indicates that the English textbook 'Bahasa Inggris' for Grade XI second semester has the relevancy aspect.