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Cytoplasmic male sterility (CMS) is a common biological phenomenon used in hybrid production of peppers (<i>Capsicum annuum</i> L.). Although several <i>restorer-of-fertility</i> (<i>Rf</i>) genes of pepper CMS lines have been mapped, there is no report that the <i>Rf</i> gene with clear gene function has been isolated. Here, pepper CMS line HZ1A and its restorer line HZ1C were used to construct (HZ1A × HZ1C) F₂ populations and map the <i>Rf</i> gene. A single dominant gene <i>CaRfHZ</i> conferred male fertility according to inheritance analysis. Using sterile plants from (HZ1A × HZ1C) F₂ populations and bulked segregant analysis (BSA), the <i>CaRf_HZ</i> gene was mapped between P06gInDel-66 and P06gInDel-89 on chromosome 6. This region spans 533.81 kb, where four genes are annotated according to Zunla-1 V2.0 gene models. Based on the analysis of genomic DNA sequences, gene expressions, and protein structures, <i>Capana06g002968</i> was proposed as the strongest candidate for the <i>CaRf_HZ</i> gene. Our results may help with hybrid pepper breeding and to elucidate the mechanism of male fertility restoration in peppers.