Highly efficient gene delivery using lentiviral vectors is beneficial not only for basic cell science research but also for human gene therapy applications. Lentiviral pseudotyping with vesicular stomatitis virus G (VSV-G) is a commonly used method that enables the transduction of various cell types. However, the low expression of low-density lipoprotein-receptor, the primary receptor of VSV-G, limits the efficiency of lentiviral vector transduction. Sendai virus hemagglutinin-neuraminidase glycoproteins recognize terminal sialic acids on the host cell plasma membrane, facilitating viral entry. Here, we describe methods for lentiviral dual-pseudotyping with VSV-G and Sendai virus hemagglutinin-neuraminidase to broaden viral tropism.