Quick answer
Kenji is a boy name.
Meaning and history
From Japanese 健 ( ken ) meaning "healthy, strong" or 研 ( ken ) meaning "study, sharpen" combined with 二 ( ji ) meaning "two". This name can also be formed from other combinations of kanji characters.
Notes and context
Usage: japanese | Japanese Hiragana: けんじ; Japanese Katakana: ケンジ