Purpose: This study investigated the extent to which comprehension monitoring in children's first and second language predicts reading comprehension. Method: Children's ability to detect inconsistencies in orally presented stories was measured by response to a judgment question about whether the story made sense and by the identification of the inconsistency within the story. The participants included 115 English-French bilingual children (M[subscript ageGrade2] = 7.8 years) recruited from a French immersion program in Canada. Results: In each language, two regressions were carried out to examine the contribution of comprehension monitoring to reading comprehension in Grades 2 and 3, and one regression was computed to examine the contribution of Grade 2 comprehension monitoring to Grade 3 reading comprehension. The concurrent results revealed that, in Grade 3, children's comprehension monitoring was a unique predictor of reading comprehension in English and French. This relationship was not observed in Grade 2. Notably, the longitudinal analyses indicated that Grade 2 children's comprehension monitoring in English made a significant contribution to English reading comprehension in Grade 3. However, this relationship was not established in French. Conclusions: These results promote a call to include support for higher-level oral language skills during the early stages of bilingual reading instruction.