Grayling
Grayling or Greyling may refer to:

Animals
Fish
Grayling, generically, any fish of the genus Thymallus in the family Salmonidae
European grayling (Thymallus thymallus), the type species of the genus Thymallus
Arctic grayling (Thymallus arcticus)
Australian grayling (Prototroctes maraena), a fish in the family Retropinnidae
New Zealand grayling (Prototroctes oxyrhynchus), a recently extinct fish of New Zealand

Butterflies
Grayling, many of the butterflies in the genus Hipparchia and Oeneis
Grayling (butterfly) (Hipparchia semele)
Common wood-nymph or grayling (Cercyonis pegala)

Places
United States
Grayling, Alaska
Grayling, Michigan
Grayling Charter Township, Michigan
Camp Grayling, National Guard training facility near Grayling, Michigan

People
A. C. Grayling (born 1949), British philosopher
Chris Grayling (born 1962), British politician
Eduard Greyling (born 1948), South African ballet dancer

Other uses
Grayling (PR firm), a public relations firm
USS Grayling, several US Navy ships and submarines
Dr Grayling Russell, a fictional character in the Inspector Morse TV series