Botryoidal Spring is a fountain-type geyser in the Lower Geyser Basin of Yellowstone National Park in the United States.

Botryoidal Spring is part of the White Creek Group, which includes A-0 Geyser and Spindle Geyser.

The term botryoidal refers to the subspherical, grape-like geyserite structures around the vent.

With no warning, eruptions start with a broad, moderately noisy burst.

Eruptions may start with a blue bubble, caused by a large steam bubble rising from below the water surface.