The stores – located in Hawarden Road, Penyffordd, and in Walter Road, Swansea – will create up to 30 local jobs.
The outlets will feature Amazon Lockers, Costa Coffee Express, and a bakery.
Paul Chudley, Co-op regional manager, said: “We are delighted to continue our investment programme in Wales which is creating new stores in communities, while transforming our existing sites – this includes the introduction of additional services, such as Amazon Lockers, Costa Coffee, and the phased roll-out of our own online shop alongside our work with partners including Deliveroo and John Lewis click-and-collect, to develop a really compelling convenience offer locally.”