Cognomen Chepkirui (Chepkirui 
) , globally, is quite a common surname. The last name Chepkirui is habitual in Sub-Saharan Africa, particularly Kenya, where it is quite a common surname. Much less frequently, Chepkirui is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Chepkirui | Norway, Kenya, United States, Spain, Australia |
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joyce chepkirui Kenyan long-distance runner, KE (b. 1988) |
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| dorothy chepkirui researcher |
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| carolyne chepkirui researcher |
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| sheila chepkirui Kenyan female distance runner, KE (b. 1990) |
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| purity chepkirui Kenyan long-distance runner |
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| emmaculate chepkirui |
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Ms, Joyce, Nancy, Naomi, Naomy, Nelly, Edith, Vicky, Faith, Flora, Irene, Winny, Zeddy, Monica, Milkah, Sharon, Sheila, Stella, Carren, Brigid, Brenda, Koskey, Janet, Lydia, Loice, Lorna, Joy, Ivy, Mary, Lily, Lynn, Jane, Joan, Judy, Emmy, Mercy, Knight, Milka, Alice, Agnes, Caren, Clara, Benta, Betty, Daisy, Diana, Doris, Linda, Susan, and Purity