A Mexican hat is a sombrero – a broad-brimmed and high-crowned hat.
Mexican hat may also refer to:
Mexican Hat, Utah, a census-designated place in Utah, USA and/or the balanced rock nearby that resembles an inverted sombrero Ratibida columnifera or upright prairie coneflower, a species of wildflower that is native to much of North America Kalanchoe daigremontiana or Mexican hat plant, a succulent plant native to Madagascar
See also The Jarabe tapatío, the "Mexican Hat Dance" The Mexican hat potential, a prescription for the potential energy that leads to the Higgs mechanism The Mexican hat wavelet, a continuous wavelet function Sombrero (disambiguation)