Recommender
The Century Dictionary and Cyclopedia
noun.
One who or that which recommends.
the GNU version of the Collaborative International Dictionary of English
noun.
One who recommends.
Wiktionary, Creative Commons Attribution/Share-Alike License
noun.
Agent noun
of
recommend
; one who recommends.
Word Usage
"A: General letters of recommendation are welcome provided they are less than a year old and the recommender is aware that his or her letter is being used."