A holder for a paper cup is provided to fix a paper cup more stably and firmly as upper and lower support parts hug the outside of the paper cup. A holder for a paper cup includes: an upper support part(10) which hugs the upper outside of the paper cup and has an upper insertion groove(11) at the upper end, wherein the upper insertion groove is fixed to the upper end of the paper cup; a lower support part(20) which hugs the lower outside of the paper cup and has a lower insertion groove(21) at the lower end, wherein the insertion groove is fixed to the lower end of the paper cup; and a grip part(30) which has up-down elasticity and connects the upper support part with the lower support part.
