Clag may refer to:
*
Clag (glue), an Australian brand, made by Bostik
*Clag,
railway terminology
Rail terminology is a form of technical terminology. The difference between the American term ''railroad'' and the international term ''railway'' (used by the International Union of Railways and English-speaking countries outside the United St ...
for the exhaust emissions of certain locomotives
*
Clag (card game), a trick-taking card game
*
Conference of Latin Americanist Geographers (CLAG)
*A common name for a
horse-fly
Horse-flies or horseflies are true flies in the family Tabanidae in the insect order Diptera. They are often large and agile in flight, and only the female horseflies bite animals, including humans, to obtain blood. They prefer to fly in su ...
{{Disambiguation