A cell culture transferring instrument (10) includes a cylindrical body (12) held by an operator not shown in the drawing, a plunger (14) inserted through the interior of the cylindrical body (12), a plurality of support members (16) connected to a distal end (14a) of the plunger (14), and an adsorbent (20) capable of adsorbing a sheet-shaped cell culture (18) held by the support members (16). The support members (16) in contact with the distal end of the cylindrical body (12) are elastically deformed by displacing the plunger (14) toward the proximal end (14b) side with respect to the cylindrical body (12) in a state in which the sheet-shaped cell culture (18) is adsorbed to the adsorbent (20), whereby the adsorbent (20) and the sheet-shaped cell culture (18) are deformed and housed in a housing hole (22) in the cylindrical body (12).