Colleges and universities across the state have lined up speakers for spring commencement exercises.

University of Maine, Orono

10 a.m. and 2:30 p.m. Saturday, May 12, Alfond Arena. Speakers: Robert Edwards, president emeritus of Bowdoin College; Tess Gerritsen, best-selling author.

University of Maine at Augusta (including University College of

Bangor)

10 a.m. Saturday, May 12, Augusta Civic Center. Speaker: Augusta Mayor Roger Katz.

University of Maine at Farmington

10:30 a.m. Saturday, May 12, outside behind Olsen Student Center. Speaker: Alan G. Kuniholm, principal of Portland PDT Architects.

University of Maine at Fort Kent

1 p.m. Saturday, May 12, UMFK Sports Center. Speaker: Norman L. Fournier, executive director, Fish River Rural Health.

University of Maine at Machias

2 p.m. Saturday, May 12, Frederick Reynolds Athletic Center. Speaker: Frank Van Riper, Down East journalist.

University of Maine at Presque Isle

10:30 a.m. Saturday, May 12, Wieden Gymnasium. Speaker: Gov. John Baldacci.

University of Southern Maine, Portland-Gorham

9 a.m. Saturday, May 12, Cumberland County Civic Center, Portland. Speaker: Richard L. Pattenaude, USM president.

University of New England, Biddeford

3 p.m. Saturday, May 12, Cumberland County Civic Center, Portland. Speaker: Robert Shetterly, Maine artist.

York County Community College, Wells

10 a.m. Saturday, May 12, on campus. Speaker: Maine Labor Commissioner Laura Fortman.

Husson College, Bangor

10:30 a.m. Saturday, May 12, Winkin Athletic Complex. Speaker: U.S. Rep. Michael Michaud, 2nd Congressional District.

St. Joseph’s College, Standish

10 a.m. Saturday, May 12, Alfond Center.

Thomas College, Waterville

1 p.m. Saturday, May 12, Harold Alfond Athletic Center. Speaker: John Rowe, chairman, president of Exelon Corp.

Unity College, Unity

1 p.m. Saturday, May 12, gymnasium. Speaker: Janisse Ray, environmental activist, poet and author of “Ecology of a Cracker Childhood.”

Maine College of Art, Portland

2 p.m. Sunday, May 13, Merrill Auditorium. Speaker: Tim Rollins, artist and founder of Kids of Survival.

Eastern Maine Community College, Bangor

1:30 p.m. Saturday, May 19, Bangor Auditorium. Speaker: Robert Jenkins, EMCC 2007 student of the year.

Kennebec Valley Community College, Fairfield

10 a.m. Saturday, May 19, Augusta Civic Center. Speaker: state Sen. Elizabeth Mitchell, majority leader, Maine Senate.

Northern Maine Community College, Presque Isle

10 a.m. Saturday, May 19, gymnasium. Speaker: U.S. Sen. Susan Collins.

Southern Maine Community College, South Portland

Noon Saturday, May 19, Cumberland County Civic Center, Portland. Speaker: Gary Crocker, director of state and federal programs for Maine Community College System and humorist.

Bates College, Lewiston

10 a.m. Sunday, May 27, on the quad in front of Coram Library. Speaker: Corey Harris, singer-songwriter.

Bowdoin College, Brunswick

10 a.m. Saturday, May 26, Walker Art Building terrace.

Colby College, Waterville

10 a.m. Sunday, May 27, lawn in front of Miller Library. Speaker: Thomas C. Schelling, winner of 2005 Nobel Prize in economics for his work in game theory.