Cognomen ใจสิงห์ (ใจสิงห์ 
) , in the world, is a rare family name. The cognomen ใจสิงห์ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Likewise, ใจสิงห์ is the forename as well as the last name.
| ไพโรจน์ ใจสิงห์ Thai actor (1943-2021), TH (b. 1943) |
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