Dawn Tarnofsky-Ostroff (born 1960) is President of Entertainment of The CW Television Network. She is in charge of all creative efforts of the network and oversees such areas as current programming, series development, scheduling, marketing and publicity.

She is a graduate of Florida International University in Miami, Florida, where she earned her Bachelor of Science degree in journalism.

Dawn Ostroff resides in Los Angeles, CA with her husband Mark and their four children Justin, Jonathan, Michael, and Lane.