| 1 | 原则 | 原則 | yuán zé | yuan2 ze2 | principle; doctrine; Classifiers: 个 | | |
| 2 | 原因 | 原因 | yuán yīn | yuan2 yin1 | cause; origin; root cause; reason; Classifiers: 个 | | |
| 3 | 原来 | 原來 | yuán lái | yuan2 lai2 | original; former; originally; formerly; at first; so, actually, as it turns out | | |
| 4 | 原子 | 原子 | yuán zǐ | yuan2 zi3 | atom; atomic | | |
| 5 | 原理 | 原理 | yuán lǐ | yuan2 li3 | principle; theory | | |
| 6 | 原始 | 原始 | yuán shǐ | yuan2 shi3 | first; original; primitive; original (document etc) | | |
| 7 | 原料 | 原料 | yuán liào | yuan2 liao4 | raw material; Classifiers: 个 | | |
| 8 | 原 | 原 | yuán | yuan2 | former; original; primary; raw; level; cause; source; Hara (Japanese surname) | | |
| 9 | 原有 | 原有 | yuán yǒu | yuan2 you3 | original; former | | |
| 10 | 原材料 | 原材料 | yuán cái liào | yuan2 cai2 liao4 | raw materials; unprocessed materials | | |
| 11 | 原子核 | 原子核 | yuán zǐ hé | yuan2 zi3 he2 | atomic nucleus | | |
| 12 | 原谅 | 原諒 | yuán liàng | yuan2 liang4 | to excuse; to forgive; to pardon | | |
| 13 | 原始社会 | 原始社會 | yuán shǐ shè huì | yuan2 shi3 she4 hui4 | primitive society | | |
| 14 | 原先 | 原先 | yuán xiān | yuan2 xian1 | originally; original; former | | |
| 15 | 原子能 | 原子能 | yuán zǐ néng | yuan2 zi3 neng2 | atomic energy | | |
| 16 | 原则上 | 原則上 | yuán zé shang | yuan2 ze2 shang5 | in principle; generally | | |
| 17 | 原油 | 原油 | yuán yóu | yuan2 you2 | variant of 缘由 ; crude oil | | |
| 18 | 原野 | 原野 | yuán yě | yuan2 ye3 | plain; open country | | |
| 19 | 原告 | 原告 | yuán gào | yuan2 gao4 | complainant; plaintiff | | |
| 20 | 原子弹 | 原子彈 | yuán zǐ dàn | yuan2 zi3 dan4 | atom bomb; atomic bomb; A-bomb | | |
| 21 | 原本 | 原本 | yuán běn | yuan2 ben3 | originally; original | | |
| 22 | 原地 | 原地 | yuán dì | yuan2 di4 | (in) the original place; the place where one currently is; place of origin; local (product) | | |
| 23 | 原故 | 原故 | yuán gù | yuan2 gu4 | variant of 缘故 | | |
| 24 | 原子量 | 原子量 | yuán zǐ liàng | yuan2 zi3 liang4 | atomic weight; atomic mass | | |
| 25 | 原定 | 原定 | yuán dìng | yuan2 ding4 | originally planned; originally determined | | |