My name is close enough to an X-Man’s civilian name that as a kid it was easy to slip into that fantasy - ooo, I’m really that guy! Fun times when you’re 13.
There’s a self-help author with my exact name, a fiction author with the name people often call me, and a recently infamous politician with my same last name, but nobody I’m aware of in fiction.
I don’t know of any fictional characters with my name, or even my last name alone.
A good friend’s ex-husband shows up quite a bit as a fictional character – he’s got both a common first name and a common last name, so it’s not surprising.
In just the same way that the name of Raymond Burr’s character is the original Godzilla (and in Godzilla 1985) is ---- Steve Martin.
Yeah, when they remade Godzilla I was hoping they’d cast Steve Martin as a reporter named Raymond Burr. 
My dad’s name – first and last (and possibly middle, as well, but I can’t remember), correct spelling and all – were in a Bobbsey Twins book. I came across it when I was reading a Bobbsey Twin book when I was 7 or 8. As far as he knew, he didn’t know the author.
According to howmanyofme.com, our last name is pretty rare, with just over 1,200 people in the USA having the last name. When I put in my dad’s first and last names, there are currently only 6 with that combination. Back in the '60s, when I came across the name, there were probably less.
Our theory was that the author may have been married to one of my dad’s shipmates from WWII.
A version of my name (nickname that only one person ever used for me, and my last name, which isn’t common) was a character in a book that I saw mentioned, and the odd thing was that the girl had facial scars. I had been in an accident a few years before and had facial scars. I was a teenager, and decades pre-internet, so was never able to track it down, but it sort of scared me.
My first name is extremely uncommon, but my last name has popped recently as either a first or last name for characters in three different TV shows. (As well as a crewmember of the NCC-1701.)
By one of the freeways passing through Sacramento (I forget which one) there’s a big building with a sign up by the freeway, “Goering’s Jewish Sausages.” Gave me pause the first time I saw it.
My first name is fairly common so I’ve seen it in works a number of times, but my last name is shared by only two families, the Scandahoovian bunch from Minnesota (raises hand) and the Jewish bunch from Baltimore. I’ve never seen it in fiction.
Jack Lemmon played a character with my name in the movie, “It Should Happen to You,” although he spelled the last name wrong (that’s a common problem with my last name). My name also shows up as one of the kids in Jumanji (not the one that grows up to be Robin Williams).
I shall refrain from making an outrageously offensive joke here! :eek:
How cool, I have one too! In the Same Boat mentions a minor character that has the same name as both my great-grandfather and his uncle; what made the hair stand up on the back of my neck when I first read it was that the characters grandfather ‘died of the drink’ - which is actually how my great-granddad’s uncle died. I know Kipling lived in Vermont for a couple of years, and reading that made me wonder if he knew that side of the family somehow. Most likely not, though.
Other than that, the only fictional namesakes I know have been either villains (greedy chef), heavies (higher-up in the FBI), or comic foils (elementary school principal).
In the field of non-fiction, I attended a family reunion of my Swedish cousins a few years ago and found that one of them, having never met my mom’s immediate family and knowing nothing of them, had named their child after my maternal grandfather. Complete coincidence, and all the more interesting because the name is an uncommon one these days and is extremely old-fashioned to boot.
There is one quite famous example of my surname in real life today. There is one well known fiction example of my surname from a rather popular HBO series. I’m pretty sure my surname made an appearance on Law and Order; SVU but I can’t find a reference for it.
I have seen one of my brothers get “promoted” to Major and credited as a consultant for a movie I can’t recall the name of.
Apparently my last name is or was quite common in the “old country”, sort of like Smith or Jones in the US.
One of the characters in Stephen King’s “Hearts in Atlantis” and I share a first and last name
My last name isn’t exactly rare, and there are some high profile things that use it after someone, but it is far from common.
I have never heard of any fictional character who has it at all. Inspired by this thread I looked up “<last-name> fiction” as was happy to see a novel I had never heard of, by an author I have a passing knowledge of, used it for a character.
Unfortunately reading the wikipedia, it was a novelization of an actual event, and was the real dudes name. So still no real fictional namesake.