Namdalseid may refer to:
Places Namdalseid (village), a village in Namsos Municipality in Trøndelag county, Norway Namdalseid Church, a church in Namsos Municipality in Trøndelag county, Norway Namdalseid Municipality, a former municipality in Trøndelag county, Norway
Other Namdalseid IL, a sports club based in the village of Namdalseid in Namsos Municipality in Trøndelag county, Norway