The authors retract the article “Hypoxia Alters Ocular Drug Transporter Expression and Activity in Rat and Calf Models: Implications for Drug Delivery”, Mol. Pharmaceutics 2013, 10 (6), 2350–2361, following a scientific misconduct investigation by the University of Colorado Denver Anschutz Medical Campus, which concluded that the LC–MS peak areas supporting the data in Figures 4, 5, 6, and 7 relating to the calf models were falsified by Rajendra Kadam. The fabrication of data related to these figures raises questions about the conclusions within the paper.