Long answer: Halloween is a holiday and a proper noun, so it should be capitalized according to title capitalization rules.
Does Halloween need a capital letter?
Holidays, religious and secular, are usually capitalized. … Holidays like Christmas, Thanksgiving (in the US), Halloween, New Years and Boxing Day (in the UK) are always capitalized. If the words day and eve are part of the holiday name, capitalize them as well.
Is Halloween a Common Name or a Proper Name?
The word “Halloween” is a proper noun.
Should Happy Thanksgiving be capitalized?
Capitalize every word of a holiday name, including Eve and Day. Don’t capitalize words like happy or merry when spelling them with a holiday, except at the beginning of the sentence. I wish you a happy Thanksgiving Day. “Happy” is not capitalized.
Do you capitalize a sentence?
Trick ortreating and trick ortreeater require hyphens, while trick or treat does. It is autumn! Seasons are never capitalized.