An elevated level of low-density lipoprotein (LDL) in the bloodstream is a causal risk factor for atherosclerotic cardiovascular disease (ASCVD). The low-density lipoprotein receptor (LDLR) is a critical regulator of circulating LDL, and increasing LDLR activity is an effective therapeutic approach to reduce circulating LDL cholesterol levels. In this study, we characterize PROX1 and CHD7, two genes we previously identified in a genome-scale CRISPR screen as positive regulators of LDL uptake in HuH7 cells. We found that although disruption of either PROX1 or CHD7 significantly reduced LDL uptake, only PROX1 disruption significantly reduced the cellular levels of LDLR mRNA and surface-displayed LDLR protein. Consistent with a direct role for PROX1 in LDLR gene regulation, we found predicted and experimentally confirmed PROX1 binding sites at noncoding regions of the LDLR locus. Using publicly available datasets, we observed two PROX1 binding sites previously identified by chromosome immunoprecipitation (ChIP-seq) that overlap binding sites for HNF4α , a known regulator of hepatic lipid metabolism that has previously been shown to interact with PROX1 to co-regulate the expression of other hepatic genes. Together, our results support a model in which both PROX1 and CHD7 promote cellular LDL uptake through distinct mechanisms, with PROX1 directly promoting LDLR gene expression and CHD7 functioning through an LDLR-independent pathway.