This is Scindapsus aureus, also known as Pothos as the first answer mentions, and Devils Ivy. It does not like direct sunlight, although it likes a bright spot. The reason I'm adding an answer is because your plant doesn't look good - it should be bushy with more than one stem either dangling or trailing, or trained up a support. I'd suggest you cut off about six to eight inches from the top, strip off the lower leaves and pop it in a bottle of water, with just the bottom part of the stem sitting in water. This will produce roots to make a new plant. In the meantime, cut back the rest of the plant, repot in new compost if you haven't done that in a while, water well, but don't leave it sitting in water for longer than 30 minutes, put it somewhere bright but out of direct sun, and wait for it to put on (lots and lots) of new growth. Feed weekly with houseplant food during growing season (spring and summer).