The US-based retailer said it is proposing to close the shops when their leases end in July but did not clarify how many jobs would be impacted by the move.
Gap has also not disclosed which of its stores will be affected by the move.
It said the decision will leave it with around 50 other standalone and outlet stores, although the group said it is continuing to assess its current portfolio as part of a strategic review it started last year.
The company said on Wednesday that it is “keen to maintain a presence in Europe” but this could include greater focus on its online sales.
A spokeswoman for the company said: “We are proposing to close 19 Gap stores in the United Kingdom and the Republic of Ireland that have leases ending at the end of July 2021.
“These leases are not being extended due to the strategic review that we have under way.”
It comes after a raft of major fashion retail rivals, including Debenhams and Topshop shut stores after tumbling into administration following the impact of the pandemic.
Gap was among non-essential retailers to reopen their UK stores from April 12.
