An ink jet recording head includes a recording element substrate; an electric wiring member including an array of leads connected to the recording element substrate at an electrical connecting portion; a supporting portion including a surface supporting the electric wiring member and a recessed bottom surface for supporting the recording element substrate; sealing material covering a part of an upper surface of the electric wiring member, the electrical connecting portion, a part of an upper surface of the recording element substrate, and the array of leads; and a projection provided between the electric wiring member and the recording element substrate at an end of the array. A level difference between upper surfaces of the projection and the recording element substrate is smaller than a level difference between the upper surfaces of the recording element substrate and the electric wiring member.