This study aims to explore the application of reading strategies to the reading of English texts by Thai vocational college students. Data were collected via questionnaire surveys, think-aloud experiments and semi-structured interviews. The research results reveal different typologies of reading strategies adopted by lower and higher level English proficient students, illuminating how they utilized these strategies differently. Typologies of reading strategies utilized between students of higher and lower English proficiency levels were similar. There was no significant difference in the overall use of reading strategies between the higher and lower level English proficient students, excluding retrieval strategies that were employed more frequently by higher level students than those students with lower English proficiency. The higher level students utilized almost all subscales of strategies (excluding memory strategies) more frequently than their lower level counterparts.