CLINT EASTWOOD'S WIFE ENTERS REHAB for Depression & Anxiety

Clint Eastwood's wife Dina has checked herself into rehab for help with depression and anxiety ... TMZ has learned.

Dina, who stars in her own reality show with Clint's daughter Francesca -- "Mrs. Eastwood & Company" -- entered an exclusive facility in Arizona ... sources close to the family tell us.

We're told she is NOT being treated for substance abuse.

Clint and Dina have been married since 1996 and have a 16-year-old daughter, Morgan, who also stars in the reality show. 

Clint is no stranger to the treatment facility circuit - He's a major donor to a hospital in Monterey, CA ... which named its youth program after him. The program specializes in teen drug, alcohol and mental health issues. 

We've reached out to the Eastwood family -- so far no comment.