Blacklead may refer to:
Graphite, also known as "black lead" Mixed with oil or grease as a finish for stoves Blacklead, another name for the Plumbago drawing style and medium Blacklead Island, Nunavut, Canada
Black residue left from chimney smoke, cooking fires, etc. "...And the half- washed out traces of smut and blacklead that tattooed her countenance." Nicholas Nickleby, Charles Dickens