For the first time in 30 years, Cal Ripken Jr. is a single man ... because his divorce was officially finalized today.
A lawyer for Kelly Ripken confirmed the split to the Baltimore Sun ... saying, "Kelly has been a great mother to two fabulous children and a wonderful, faithful wife for the duration of the parties' relationship, which lasted more than 30 years."
The lawyer added, "Kelly looks forward to the next chapter in her life, which will be focused on philanthropy and her commitment to promoting women's health, most currently through 'A Woman's Journey' at Johns Hopkins Medicine."
FYI -- Ripken is reportedly worth in the neighborhood of $75 mil ... but the details of the divorce settlement have not been revealed.
Cal and Kelly married in 1987 -- and have 2 children together.