Romeo & Juliet: Nurse
Hamlet: Gertrude
Lady MacBeth and random witch (small cast)
Then I’ll take his spot as Touchstone. 
Also:
Roderigo, Othello
The Douglas, Henry IV Pt 1 (fun!)
Angus, Macbeth
Egus / Philostrate, Midsummer Night’s Dream
Sebastian, The Tempest
Spear-carrier, Romeo & Juliet (well, sword, actually: I had no name and no lines and was onstage solely to fill out the fight corps, and to do a high fall from a balcony during one of the brawls)
There’s more, but I can’t find my theatrical resume. :o
Julius Caesar, Portia
Midsummer’s Night Dream, Peaseblossom*
*waves to Fretful Porpentine
The Priest, Twelfth Night.
“A contract of eternal bond of love, confirmed by mutual joinder of your hands, attested by the holy close of lips, strengthened by interchangement of your rings, and all the ceremony of this compact sealed in my function, by my testimony-- since when, my watch hath told me, toward my grave I have traveled but two hours.”
That’s it.
Juliet, Romeo and Juliet (yawn)
Katherine, Taming of the Shrew (that was fun)
Beatrice, Much Ado About Nothing (that was my fave)
Oh, what I wouldn’t give to do Ophelia! But I think I’m getting too on in years for that one.
I’m pretty sure Hamlet felt the same way.
Merry Wives of Windsor Mistress Page
Prospero, The Tempest
Fortinbras, Hamlet
Prince Hal, Henry IV part 2
Rosencrantz and Gildenstern are Dead count? Shakespearian characters at least.
Mine were mostly all-women casts:
Comedy of Errors - Antipholus of Ephesus
Henry VI Part I Talbot
Winter’s Tale King Leontes
Great! All we need is a Cobweb and a Mustardseed, and we’re set!
Midsummer Night’s Dream, Puck and First Fairy (alternating casts). I still remember a good portion of my lines as Puck, 11 years later. S/he was really fun to play.
Does Scenic Design count? 
I’ve designed A Midsummer Night’s Dream and Twelfth Night.
Taming of the Shrew, King John and Richard II, stage manager.
Romeo & Juliet – Prince(ss) Escalus, the apothecary