阿波罗尼奥斯（古希腊语：Ἀπολλώνιος）（约前262年至前190年），又译为阿波罗尼乌斯，阿波罗尼等，古希腊几何学家，着有《圆锥曲线论》八卷，《论切触》（Ἐπαφαί），等等。 在他的八卷本《圆锥曲线论》（第八卷失传）中，提出：

这些工作为一千八百多年后开普勒、牛顿、哈雷等数理天文学家研究行星和彗星轨道提供了数学基础。

此外，他还：

Apollonius of Perga (Greek: Ἀπολλώνιος; Latin:Apollonius Pergaeus; c. 262 BC – c. 190 BC) was a Greek geometer and astronomer noted for his writings on conic sections. His innovative methodology and terminology, especially in the field of conics, influenced many later scholars including Ptolemy, Francesco Maurolico, Johannes Kepler, Isaac Newton, and René Descartes. Apollonius gave the ellipse, the parabola, and the hyperbola their modern names. The hypothesis of eccentric orbits, or equivalently, deferent and epicycles, to explain the apparent motion of the planets and the varying speed of the Moon, is also attributed to him. Ptolemy describes Apollonius' theorem in the Almagest XII.1. Apollonius also researched the lunar history, for which he is said to have been called Epsilon (ε). The crater Apollonius on the Moon is named in his honor.