Last name Kathryn (Kathryn 
, كاثرين 
, Катрин 
, along with others...) , worldwide, is quite a rare cognomen. The family name Kathryn is habitual in Isle of Man, where it is quite a rare surname, Belarus, where it is a rare surname, and Australia. Not in comparison with a country's population, it most frequently occurs in the United States, Indonesia, and Russia. Predominantly, Kathryn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kathryn | Australia, Canada, Philippines, United States, United Kingdom |
| كاثرين | Iraq, Palestinian Territory, Sudan |
| Катрин | Bulgaria, Ukraine, Belarus, United States, Russia |
| קתרין | Israel |
| Кэтрин | Ukraine, Russia, Kazakhstan |
| Кетрін | Ukraine |
| 凯瑟琳 | China |
Caterina, Catherina, Catherine, Cathrin, Cathryn, Catrin, Kat, Katerina, Katherina, Katherine, Kathrin, Kathryne, Katrin, Kàthryn, Καίτη, Κατερίνα, Екатерина, Катерина, Катерине, Катерін, Катеріна, Катруся, Катрын, Катря, Катрін, Катхрын, Катя, Кацярына, Кейт, Кетрин, Кэт, קתרינה, كاترين, كاترينا, کاترین, แคทริน, แคทรีน, カトリーヌ, キャサリン, キャット, ケイトリン, 凯特, 凱薩琳, 卡特琳, and 卡特琳娜
Lee, Parker, Rogers, Taylor, Thomas, Turner, Nelson, Harris, Walker, Wilson, Wright, Stewart, Roberts, Jackson, Johnson, Edwards, Mitchell, Sullivan, Anderson, Campbell, Phillips, Robinson, Murphy, Miller, Morgan, Morris, Cook, King, Hall, Hill, Wood, Moore, Scott, Smith, Allen, Adams, Thompson, Clark, Brown, Kelly, Davis, Green, Lewis, Jones, Evans, White, Young, Martin, Baker, and Williams