This is the peer reviewed version of the following article: Loo, E.X.L., Tham, E.H., Phang, K.W., Goh, A., Teoh, O.H., Chong, Y.S., Gluckman, P.D., Godfrey, K.M., Van Bever, H., Lee, B.W., Chong, M.F.‐F. and Shek, L.P.‐c. (2019), Associations between maternal vitamin D levels during pregnancy and allergic outcomes in the offspring in the first 5 years of life. Pediatr Allergy Immunol, 30: 117-122. doi:10.1111/pai.12995, which has been published in final form at https://doi.org/10.1111/pai.12995. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.