There is proposed a catheter holder which is compact and which can be released easily while holding the unhoused portion of the catheter stably. The catheter holder 100 includes: an attachment portion 115 for being attached to a portion of a holder tube 20 for housing a catheter; and a plurality of hold portions 101, 102, 103 constituted integrally with the attachment portion 115 and holding an unhoused portion 10 of the catheter, which is exposed from the holder tube.