St Mark's Church, Connah's Quay is in the town of Connah's Quay, Flintshire, Wales. It is an active Anglican church in the deanery of Hawarden, the archdeaconry of Wrexham and the diocese of St Asaph. The church is the parish church for Connah's Quay and the mother church of St David's Church, Connah's Quay. It is designated as a Grade II listed building by Cadw.