- 自分【じぶん】 - myself, yourself, oneself, himself, herself, I, me, you 
- 自由【じゆう】 - freedom, liberty 
- 自信【じしん】 - self-confidence, confidence (in oneself) 
- 自然【しぜん】 - nature, natural, spontaneous, automatic, naturally, spontaneously, automatically 
- 自殺【じさつ】 - suicide 
- 自ら【みずから】 - oneself, oneself, for oneself, personally, in person 
- 自身【じしん】 - (one's) self, oneself 
- 自転車【じてんしゃ】 - bicycle, bike 
- 自慢【じまん】 - pride, boast 
- 自宅【じたく】 - one's home, one's house 
- 自然【じねん】 - occurring naturally (without human influence) 
- 自由に【じゆうに】 - freely, at liberty, at will, as one likes 
- 自白【じはく】 - confession, admission 
- 自覚【じかく】 - self-consciousness, self-awareness 
- 自体【じたい】 - itself, one's own body, oneself, originally, naturally, by nature, from the start 
- 自分自身【じぶんじしん】 - oneself, myself 
- 自己紹介【じこしょうかい】 - self-introduction 
- 独自【どくじ】 - original, unique, distinctive, characteristic, peculiar, independent, one's own, personal 
- 自首【じしゅ】 - surrender (to the authorities), giving oneself up, turning oneself in 
- 自動車【じどうしゃ】 - car, automobile, motorcar, motor vehicle, auto