Fire-Making Spell

"But Snape parried the curse, knocking Harry backward off his feet before he could complete it; Harry rolled over and scrambled back up again as the huge Death Eater behind him yelled, 'Incendio!' Harry heard an explosive bang and a dancing orange light spilled over all of them: Hagrid's house was on fire."

- Hagrid's hut being set on fire

The Fire-Making Spell (Incendio) is the incantation of a spell that set things alight.

Known practitioners

 * Albus Dumbledore (possibly)
 * Arthur Weasley
 * Bellatrix Lestrange (possibly)
 * Colin Creevey
 * Filius Flitwick (possibly)
 * PiertotumLocomotor.JPG Weasley
 * George Weasley
 * Harry Potter
 * Hermione Granger
 * Neville Longbottom
 * Pomona Sprout
 * Remus Lupin (possibly)
 * Ron Weasley
 * Rubeus Hagrid (possibly)
 * Thorfinn Rowle

Etymology

 * In Latin, incendio is the dative or ablative singular of incendium, "fire", and can mean "to fire" or "for fire" (dative), "by fire" or "with fire" (ablative of instrument or means). Thus, the incantation is a way of calling upon fire to burn a desired object, since the spell caster wills harm to be done to an object "by (means of) fire."
 * "Incendio" is Catalan word for "fire".
 * "Incendio" (pronounced in-cen-DI-u) is also the first person singular of the present of the Spanish and Portuguese verb "incendiar", meaning "to set fire to".

Behind the scenes
*This may be the spell Remus Lupin used on the Hogwarts Express 1993, combined with a Flame-Freezing Charm when the lights went out as he is described as "holding a handful of flames" though it is more likely that he used the charm for Bluebell flames. This may also be the spell he used to relight candles during the Patronus lesson.
 * In the video game adaptations of Philosopher's Stone and Chamber of Secrets, Incendio is the Bluebell flames charm Hermione uses in the first book. It is used primarily to wilt dank-loving, threatening plants and burn through spider webs. In the later games it resumes its use as a spell to conjure a small burst of normal fire.
 * When Rowle used the spell offensively against Hagrid's hut, it caused an explosion, rather than simply lighting it on fire.
 * Incendio is the first known spell to be cast in the series, although magical devices (Albus's Put-Outer), abilities (Animagi) and beings (Hagrid) appeared before.
 * In the sixth film, Bellatrix uses this spell to light Hagrid's hut on fire instead of Rowle. Download_.gif

Appearances

 * Harry Potter and the Philosopher's Stone
 * Harry Potter and the Philosopher's Stone (film)
 * Harry Potter and the Philosopher's Stone (video game)
 * Harry Potter and the Chamber of Secrets (video game)
 * Harry Potter and the Prisoner of Azkaban
 * Harry Potter and the Prisoner of Azkaban (film)
 * Harry Potter and the Goblet of Fire
 * Harry Potter and the Goblet of Fire (video game)
 * Harry Potter and the Order of the Phoenix
 * Harry Potter and the Order of the Phoenix (video game)
 * Harry Potter and the Half-Blood Prince
 * Harry Potter and the Half-Blood Prince (film) 
 * Harry Potter and the Half-Blood Prince (video game)
 * Harry Potter and the Deathly Hallows: Part 1
 * LEGO Harry Potter: Years 1-4
 * Harry Potter: Spells
 * Pottermore

Notes and references
Incendio אינסנדיו Sytyjo