Chartreuse, also known as yellow-green or greenish yellow, is a color between yellow and green. It was named because of its resemblance to the French liqueur green chartreuse, introduced in 1764. Similarly, chartreuse yellow is a yellow color mixed with a small amount of green, named after the drink yellow chartreuse. The wavelength and frequency of chartreuse is near 547.5 nm or 547.5 THz.

Chartreuse may refer to:

Frost is a thin layer of ice on a solid surface, which forms from water vapor that deposits onto a freezing surface. Frost forms when the air contains more water vapor than it can normally hold at a specific temperature. The process is similar to the formation of dew, except it occurs below the freezing point of water typically without crossing through a liquid state.