- 赵紫阳 zhàozǐyáng Zhao ZiyangZhao Ziyang (1919-2005), a prominent Chinese politician and major figure in the economic reform movement; he served as the General Secretary of the Communist Party from 1987 to 1989.
- 紫阳县 zǐyángxiàn Ziyang CountyZiyang County in [[安康|安康|an1 kang1]], Shaanxi Province
- 紫阳花 zǐyánghuā hydrangeahydrangea flower