A specimen is inhibited from remaining on a surface of an aspiration tube after being withdrawn from a specimen container. The specimen container 100 includes: a container main body 20 including an opening 21; a cap 10 arranged to close the opening 21 of the container main body 20 and including a slit-formed portion 11 in which a slit 11a that allows an aspiration tube 30 to pass therethrough is formed; and a contact portion 12 provided in a position different from that of the slit 11a and that is brought into contact with a peripheral surface 31 of the aspiration tube 30 at least when the aspiration tube 30 is withdrawn from the slit 11a.