Provided is a syringe holder including: a base that is provided with a plurality of insertion through holes through which syringes are inserted； a plurality of wall parts having a cylindrical shape that project respectively from opening end edges of the plurality of insertion through holes of the base； and ribs, each of which connects each adjacent ones of the plurality of wall parts, wherein the ribs have a height from the base of 40% or more and 100% or less of a height from the base of the wall parts, the wall parts have an inner diameter of 100% or more and 115% or less of an outer diameter of barrels of the syringes, and at least an inner wall surface of each of the wall parts is made from a material including polyethylene as a main component.
