From:
http://www.worldchristiandatabase.org
Muslims among major non-Muslim ethnic groups:
MYANMAR
* Burmese - 622,062 Muslims
NETHERLANDS
* Dutch - 64,206 Muslims
PANAMA
* Latino - 30,067 Muslims
RWANDA
* Hutu - 1,051,734 Muslims
* Tutsi - 17,213 Muslims
SERBIA
* Serb - 130,572 Muslims
SINGAPORE
* Eurasian - 2,186 Muslims
* Korean - 266 Muslims
* Thai - 468 Muslims
SLOVENIA
* Serb - 784 Muslims
SOUTH AFRICA
* Eurafrican - 274,839 Muslims
* Sotho - 57,968 Muslims
* Tsonga - 15,140 Muslims
* Tswana - 72,516 Muslims
* Xhosa - 137,782 Muslims
* Zulu - 45,674 Muslims
SOUTH KOREA
* Korean - 70,597 Muslims
SWITZERLAND
* Franco-Swiss - 7,575 Muslims
* German Swiss - 24,009 Muslims
TAIWAN
* Taiwanese Chinese - 13,140 Muslims
THAILAND
* Burmese - 1,782 Muslims
* Lao - 1,006 Muslims
* Thai - 1,888,216 Muslims
UGANDA
* Ruanda - 22,375 Muslims
* Rundi - 4,972 Muslims
USA
* Afro-American - 2,213,379 Muslims
* Anglo-American - 150,090 Muslims
* Danish - 9,860 Muslims
VIETNAM
* Vietnamese - 510,473 Muslims
ZIMBABWE
* Shona - 7,130 Muslims
* Zulu - 12,964 Muslims