A weld electrical and gas connector with sealed gas flow is provided. In an exemplary embodiment, a welding cable connector system includes a male connector having a conductive body for conveying welding power. The male connector includes a sealed passageway disposed coaxially of the conductive body for conveying shielding gas, and a gas sealing valve configured to seat to stop flow of shielding gas when the male connector is not engaged. The system also includes a female connector having a conductive body for conveying welding power. The female connector includes a sealed passageway disposed coaxially of the conductive body for conveying shielding gas, and a gas sealing valve configured to seat to stop flow of shielding gas when the female connector is not engaged. The male and female connectors are mutually engageable to conduct welding power and shielding gas therethrough.