contributor

noun

1. A person who gives to a charity or cause: benefactor, benefactress, donator, donor, giver. See give/take/reciprocity.
2. A person who supports or champions an activity, cause, or institution, for example: backer, benefactor, friend, patron, sponsor, supporter. Informal angel. See help/harm/harmless.
3. A person instrumental in the growth of something, especially in its early stages: builder, creator, developer, pioneer. See make/unmake.

The noun has 2 meanings:

Meaning #1: someone who contributes (or promises to contribute) a sum of money
  Synonym: subscriber

Meaning #2: a writer whose work is published in a newspaper or magazine or as part of a book

Common misspelling(s) of contributor

• contributer