A liquid cartridge configured to be inserted into a liquid consuming apparatus in a first direction (51,57) along a horizontal direction against an urging force directed in a second direction (52, 58) opposite the first direction, and thereby to be mounted to the liquid consuming apparatus, comprising: a liquid chamber configured to store liquid therein; a front face facing the first direction when the liquid cartridge is inserted into the liquid consuming apparatus; a liquid supply portion positioned at the front face; an upper face (39, 141) facing an upward direction when the liquid cartridge is inserted into the liquid consuming apparatus; a lock surface positioned at the upper face and configured to contact a lock portion of the liquid consuming apparatus in the second direction; and an operation surface positioned at the upper face and positioned further in the second direction than the lock surface, wherein the operation surface is not movable relative to the liquid chamber, wherein the liquid cartridge is configured to pivot between a first attitude and a second attitude when the liquid cartridge is inserted into the liquid consuming apparatus, wherein when the liquid cartridge is in the first attitude, the lock surface contacts the lock portion in the second direction, wherein when the liquid cartridge is in the second attitude, the lock surface is positioned further in a downward direction than the lock portion, wherein the downward direction is the gravitational direction, wherein the upper face comprises a sub upper face positioned further in the downward direction than the operation surface, wherein when the liquid cartridge is in the first attitude, the operation surface and the sub upper face at least partly overlap in the downward direction, and a space is formed between the operation surface and the sub upper face in the downward direction. a liquid chamber configured to store liquid therein; a front face facing the first direction when the liquid cartridge is inserted into the liquid consuming apparatus; a liquid supply portion positioned at the front face; an upper face (39, 141) facing an upward direction when the liquid cartridge is inserted into the liquid consuming apparatus; a lock surface positioned at the upper face and configured to contact a lock portion of the liquid consuming apparatus in the second direction; and an operation surface positioned at the upper face and positioned further in the second direction than the lock surface, wherein the operation surface is not movable relative to the liquid chamber, wherein the liquid cartridge is configured to pivot between a first attitude and a second attitude when the liquid cartridge is inserted into the liquid consuming apparatus, wherein when the liquid cartridge is in the first attitude, the lock surface contacts the lock portion in the second direction, wherein when the liquid cartridge is in the second attitude, the lock surface is positioned further in a downward direction than the lock portion, wherein the downward direction is the gravitational direction, wherein the upper face comprises a sub upper face positioned further in the downward direction than the operation surface, wherein when the liquid cartridge is in the first attitude, the operation surface and the sub upper face at least partly overlap in the downward direction, and a space is formed between the operation surface and the sub upper face in the downward direction.