巨车轮螺（学名：Architectonica maxima），是异腹足目车轮螺科车轮螺属的一种。主要分布于越南、印度尼西亚、中国大陆、**，常栖息在潮下带。

Architectonica maxima, common name Giant Sundial, is a species of sea snail, a marine gastropod mollusk in the family Architectonicidae, which are known as the staircase shells or sundials.