Rebecca. Don’t like it all that much. Used to be called Becky and hated it. My family still calls me that sometimes, though.
Hey, Tucson, know my daughter, Heather Golinski? (oh, I know, it’s a big town…)
Another Peter checking in. Americans tend to say Pete more often than others. I introduce myself as Peter though - never really saw myself as a Pete. But, as long as I know people are referring to me I don’t really mind what name they use.
Edwin
Yuck! Always hated it! Sounded so… wimpy. Edward was more… manly.
I was named after my father, who was named after an uncle, ad infinitum…
Then I discovered that Edwin means “One who acquires land,” while Edward means “One who guards land.”
I proceeded to buy all the property I could afford and hired them Edwards to work for me! (They’re not too bad, but they grumble a lot.)
I wanted to be named “Roy,” after my idol, Roy Rodgers.
At one point I decided that names were relative, and started acquisition. Currently my whole set of acquisitions comprise:
Edwin Frank John (Confirmation name) Kaonohiulaokahokumiomio`ehiku (Hawaiian name) Golinski (birth surname) Shé (2nd marriage surname) L’Esperance (3rd marriage surname), and that’s all legal & complete, never dropped or replaced any names, kept 'em all.
Generally I go by “Ed.” My close friends call me “Snake.” Until I was in first grade, I went by my family-induced nickname, “Bubby,” (which I lerned to hate).
“What is in a name…?”
As my SDMB friend Musicat says, “Just don’t call me late to dinner.”
More information than was expected, asked for or desired, but I got it all out of the way in one shot.
Sssssss
Gemma.
Try not to be too shocked.
Valerie. Everyone calls me “Val” except my husband, Tim, who calls me “Valerie.” And I call him “Timothy.” We’re oddly formal that way.
Well, I’ve never been called any of those first four names, but all my friends call me Boss. In fact, whenever someone calls me Ben, it takes me a while to realise they’re talking about me.
A friend (who I haven’t seen in years) would sometimes call me Mbossa, and would say it’s my ‘African tribal name’ or something. I haven’t been called Mbossa IRL for a long time, but I use it on the internet because it’s more interesting than Boss or Ben.
Well Kelly means warrior. Warriors need to stick together 
[plants flag]
I claim this thread first for all named Michael (or Mike).
I can’t believe no others with that handle have chimed in.
Officially it’s Julia, but my parents have always called me Julie instead. They’ve never, ever called me Julia, even when I was in trouble.
At work I tend to be called Julia just because that’s how I fill out my forms, and a lot of people seem to think it sounds more professional for some reason.
Good place to ask this: my mother claims she picked my name from a TV show. She SAYS it was the Bionic Woman (or at least, she described the Bionic Woman, and confirmed the name when I said it) but the Bionic Woman’s name was Jamie.
Was there a Julia in the Bionic Woman? I know there was a Julie in “Charlie’s Angels” but she says that isn’t the one. Anyone have a clue who I might be named after? 
Dammit!
Number one answer of 100 people surveyed, what is the dullest man’s name:
Survey Says!
John.
I shake my fist at you Mr. Richard Dawson. You scarred me for life with that single answer.
Zev
Zev Steinhardt
Damn, I’m the second Mike.
Bill…My friends call me Billy
There was a Julie in Mod Squad – maybe that’s who you’re named after.
(BTW, if you’re going to name your child after a character from a TV show, I think it behooves you to remember which show it was. JMHO.)
Well she thinks she remembers, anyway 
But that’s my mom for you.
Must be a Thai thing. My step-mother named my sister “Samantha” after the character from “Who’s the Boss?” I guess if she’d been a boy, I’d have a brother named Jonathan.
Paul.
But most folk call me Pauly these days. ‘Hey, Pauly!’ etc.
Suits me. I bet that was a real slap in the face surprise for everyone.
Kristi
My Chinese name is anglicised as “Meng-Yu Lin”, but fortunately one of my mother’s students had the foresight to realize that I would have to endure 12 years of mispronunciation, so I became “Mary Lin” instead. In college, I decided to have that legalized on all of my documents, so now it’s “Mary Meng-Yu Lin”.
My online pen name comes from Animaniacs. (I’m the Cute One. :D) The “-chan” at the end is a Japanese postfix that is used as an endearing term. (Because, once again, I’m the Cute One. :D)