N. flavescens may refer to:
Nataxa flavescens, an Australasian moth Neisseria flavescens, a commensal bacterium Neoromicia flavescens, a vesper bat Nephrotoma flavescens, a crane fly Nerina flavescens, a calyptrate muscoid Nerita flavescens, a sea snail Nigma flavescens, an araneomorph spider Nisueta flavescens, a huntsman spider Nola flavescens, a tuft moth Nomada flavescens, a cuckoo bee