A shield case including a first shell having electrical conductivity and a second shell having electrical conductivity. The first shell includes a connecting portion and a cover. The connecting portion is a tube extending in a first direction and including a first portion and a second portion. The first portion is a portion of the connecting portion on one side in a second direction, the second direction crossing the first direction. The second portion is a portion of the connecting portion on the other side in the second direction. The cover extends in the first direction contiguously from the first portion of the connecting portion and includes a pair of walls opposed to the second portion, with interstices left between the respective walls and the second portion. The second shell includes a first blocking portion, the first blocking portion blocking the interstices.