Tebipenem pivoxil hydrobromide (TBP-PI-HBr) is an orally available prodrug of TBP, a carbapenem with in vitro activity against multidrug-resistant gram-negative pathogens. This study evaluated the effects of single therapeutic and supratherapeutic doses of TBP-PI-HBr on the heart rate corrected QT interval (QTc) by assessing the concentration-QT (C-QT) relationship using exposure-response modeling. This was a randomized, double-blind, placebo- and active-controlled, single dose, 4-way, crossover study. Subjects received single oral doses of TBP-PI-HBr 600 and 1200 mg, placebo, and positive control, moxifloxacin 400 mg. Cardiodynamic electrocardiograms (ECGs) and blood samples were collected in each period. Twenty-four subjects were enrolled. TBP-PI-HBr had no clinically significant adverse effects on heart rate or ECG parameters. The model-predicted slope suggests that ddHR was not importantly affected by plasma tebipenem concentrations, supporting the use of QTcF as an appropriate correction method. The model predicted difference in corrected QT interval (ddQTcF) at mean peak concentration (Cmax) for TBP had negative predicted values for each dose, and no QTc prolongation was detected following TBP-PI-HBr 600 mg or 1200 mg. Assay sensitivity was established following moxifloxacin 400 mg. Exposure to TBP increased in a dose-dependent manner with 600 and 1200 mg doses. TBP area under the concentration curve from time 0 to infinity (AUC0-inf) and Cmax at the 1200 mg dose level were 1.8- and 1.3-fold higher than with the 600 mg dose. TBP-PI-HBr was generally safe and well tolerated with no effect on QT prolongation.