Baby Daisy Geyser, Cone geyser in Upper Geyser Basin, Yellowstone National Park, United States.

Baby Daisy Geyser is a cone geyser in the Upper Geyser Basin of Yellowstone National Park, part of the Old Road group. Its eruptions fountain water at about 30 degrees from vertical, the same angle as Daisy Geyser, and reach 20 to 25 feet (6.1 to 7.6 m).

The geyser showed its most active phase between 2003 and 2004, when eruption patterns resembled those of its larger neighbor Daisy Geyser. After this period, its behavior changed significantly over time.

Its name comes from the near-identical shape of its eruptions to those of Daisy Geyser, only smaller: the jet leaves the vent at about 30 degrees from vertical, the same angle as Daisy. It belongs to the Old Road group of geysers in the Upper Geyser Basin.

The geyser erupts at regular intervals of roughly 33 to 39 minutes, with each eruption lasting about 2 to 3 minutes. Visitors should stay on marked pathways and maintain a safe distance from the geyser to avoid burns from hot water and steam.

Baby Daisy's eruptions mirror those of the larger Daisy Geyser so closely that this smaller cone was named after it. Both shoot water at about 30 degrees from vertical, and Baby Daisy's bursts of 6 to 7.6 metres last two to three minutes. It also erupted briefly after the 1959 Hebgen Lake earthquake.