Does anyone know what nationality X-23 is? 

I would say Chinese but, that is just a guess because I think her mom was Chinese. 

She's whatever nationality Logan/Wolverine is, and he happens to be Canadian, born and bred since the 1890's. He's Caucasian, and Laura/X-23 is his clone, therefore she is Caucasian too. Also, her mother was not Chinese. For one, Sarah Kinney's full sister Debbie is not Chinese; as a second, her last name is Irish in origin (Kinney).

" I would say Chinese but, that is just a guess because I think her mom was Chinese.  "

Legally, I'd guess she's American.

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" @fbdarkangel: i concur,so she is half irish and canada. "

 Canadian. I'm always right 95% of the time 

I think it's been listed as unknown, 
 
ethnically she would be Canadian and whatever  her mom was, 
 
but nationality as in belonging as a citizen to a certain country, it would most likely be American if that's where the lab was when she was born there

Artists fluctuate, she occasionally looks asian-ish but as a clone of logan she's canadian, white but idk her "mom" looked asian in the comics but her ame didn't match XD 
But X-23 looked spanish in X-men Evolution so i guess no one has made a definite choice and she shall remain ambiguous 

" @haydenclaireheroes said:

" I would say Chinese but, that is just a guess because I think her mom was Chinese.  "

Kinney's an irish name "

" Artists fluctuate, she occasionally looks asian-ish but as a clone of logan she's canadian, white but idk her "mom" looked asian in the comics but her ame didn't match XD "

Canadian.

"  Canadian. I'm always right 95% of the time  "

I don't like to talk about it...

Since Wolverine is related to the Hudsons through his mother, Laura is part-Hudson, and part of whoever Logan's father was. All signs point to the Howlett Estate Groundskeeper, named Mr. Logan.  Part of this is from Wolverine: Origins the 6-issue miniseries, the rest is from the later Wolverine: Origins series that introduced Daken.