Liquid cartridge

To provide a liquid cartridge capable of suppressing damage to function of a circuit board even if the liquid cartridge is collided against a flat plane. An ink cartridge 30 includes a housing 130, an IC board 64, and an ink supply portion 34. The housing 130 has a top wall 39 supporting the IC board 64, a protrusion 43 positioned rearward of the IC board 64 and protruding upward from the top wall 39, and a rib 67 positioned frontward of the IC board 64 and protruding upward from the top wall 39. Theprotrusion 64 has a horizontal surface 154 positioned higher than a main upper surface 68 and a sub upper surface 69 ofthe rib 67. An outer surface of the ink cartridge 30 is positioned below an imaginary plane 150 between the horizontal surface of the protrusion 43 and an upper edge 67FU of a front end 67F of the rib 67. Front edges 65F of electrodes 65 in the IC board 64 is positioned further rearward than a center C2 in a front-rear direction between the horizontal surface 154 of the protrusion 43 and the upper edge 67FU pf the front end 67F of the rib 67 each of which the imaginary plane 150 is in contact with. - 36 -