Fer-de-Lance may refer to:
Snakes Bothrops, a genus of pit vipers sometimes called fer-de-lance B. lanceolatus, the Martinique lancehead snake B. caribbaeus, the Saint Lucia lancehead B. atrox, the common lancehead, native to tropical South America east of the Andes and to Trinidad B. asper, the terciopelo or Central American lancehead, native to Central and northwestern South America B. insularis, the golden lancehead, a Brazilian species
Other uses Fer-de-Lance (novel), a 1934 Nero Wolfe mystery Fer-de-Lance (comics), Teresa Vasquez, a Marvel comics supervillain Fer-de-Lance, a 1974 TV adventure film starring David Janssen