A donor or contributor. Often used in combination: almsgivers. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "giver" in a sentence
"These two elements feed off each other and are so intertwined that the giver is at least a much responsible for the situation as the reciever."
"Plus, the gift-giver is absolutely true to the spirit of the song, so the next day she gets another partridge in a pear tree along with the turtledoves."
"I will quote the giver from the enclosed card: "I simply could not pass up an opportunity to give you plush penguin Vikings with built-in hockey.""