Lilium kelleyanum is a species of lily known by the common name Kelley's lily. It is endemic to the Sierra Nevada of California, where it grows in moist habitat in forests, such as streambanks. It is a perennial herb known to exceed two meters in height. It originates from a scaly, elongated bulb up to about 8 centimeters long. The oval leaves are located in several whorls about the stem, each up to 15 centimeters in length and drooping at the tip. The flower cluster bears up to 25 large, nodding lily flowers. The flower is bell-shaped with 6 strongly recurved yellow to orange petals up to 6 centimeters in length. There are 6 stamens with large red anthers and a pistil which may be over 3 centimeters in length. The flowers are pollinated by swallowtails.