Fumicollis is an extinct genus of hesperornithid birds that lived in the Late Cretaceous period, about 86 million years ago, in what is now Kansas, USA. The genus is known from the Niobrara Formation, and the type species, Fumicollis hoffmani, was named in honor of museum donors. Fumicollis is considered an intermediary member of the hesperornithiform group, showing a mix of basal and derived traits.