Cofield will begin a 3-year appointment in September, succeeding previous chair Mark Wing-Davey and interim chair Janet Zarish.
An experienced producer and arts administrator, she’ll replace Buzz Ward, who’s retiring after 29 years in the post.
After 11 years helping Harvard’s resident theatre mount many works that went to Broadway, she’ll return to her native London.
The experienced leader and teacher will also serve as resident director at Yale Rep for a five-year term.
The first woman in the role, she succeeds Doug Wright and is joined by a slate of board officers including Branden Jacobs-Jenkins, Kristoffer Diaz, and Christine Toy Johnson.
Suttles, an experienced arts leader with fundraising and strategic planning background, joined the Bay Area company last week.
Muse joins the company in the newly created position of director of inclusion, diversity, equity, and access (IDEA).
Newport, whose tenure began on April 1, succeeds Joe Adler.
O’Gara will remain in the position as the company searches for a permanent artistic director to replace Michael J. Bobbitt.
Barlow has been serving as the SDCF’s interim director since November.