The disclosure describes an implantable electrical lead with a conformable array of electrodes. The array of electrodes may be distributed across a convex or concaave surface to position the electrodes in various positions and orientations relative to a target stimulation site. The lead may be useful in a variety of applications such as spinal cord stimulation to alleviate chronic pain, gastrointestinal stimulation to alleviate gastroparesis or obesity, pelvic floor stimulation to alleviate incontinence or sexual dysfunction, or deep brain stimulation to alleviate neurological disorders.