Hurricanes (tropical cyclones and typhoons) generate intense cooling and vertical mixing in the upper ocean, resulting in nutrient upwelling into the “sunlit” zone which fuels short‐lived phytoplankton blooms. However, hurricanes' influence on the deep ocean remains unknown. Here we present direct evidence that hurricanes impact the ocean's “biological pump” by increasing export of labile (fresh and bioavailable) organic materials from the surface to the deep ocean. In October 2016, Hurricane Nicole tracked through the NW Atlantic Ocean passing near Bermuda. At 1,500 and 3,200 m depths, sinking particle fluxes of lipid compounds diagnostic of fresh, surface‐derived phytoplankton detritus and zooplankton and microbial biomass increased by over an order of magnitude relative to lipid fluxes prior to Nicole. We also observed that suspended particles were highly enriched in these labile compounds, down to 1,700 m depth. Hurricane enhancement of the labile carbon flux is important as this flux supports deep ocean ecosystems, affects ocean cycling of nutrients and other bioreactive elements, and regulates deep ocean oxygen consumption. The sensitivity of the ocean carbon cycle to extreme weather events furthermore suggests that climate‐induced changes in hurricane frequency and intensity will impact the ocean's biological pump and deep ocean ecosystems.