According to an embodiment of the present disclosure, a lens assembly and/or an electronic device including same may comprise: an image sensor, and three sheets of lenses arranged sequentially from the subject side toward the image sensor side along an optical axis, wherein a first lens, among the lenses, arranged at the subject side has a positive power and includes a subject-side surface that is convex toward the subject side and an image sensor-side surface that is convex toward the image sensor side, a second lens has a negative power and includes a subject-side surface that is concave toward the image sensor side, and a third lens has a negative power. The lens assembly may satisfy the following conditional equation: 0.1