The islander is yet to receive a full international cap, but has been part of previous squads.
Manager Rob Page has selected the former St Clement and Le Rocquier pupil as part of his 24-man squad for the matches against at home to Armenia and away to Turkey.
Although not being part of the Wales squad for the 2022 World Cup in Qatar, Harris was selected to travel and train with the squad to aid his development. However, he subsequently withdrew from travelling to Qatar for personal reasons.
The 18-year-old made three Premier League appearances for Fulham, making his debut in a 3-0 home win over Aston Villa in October.
Wales take on Armenia on 16 June in Cardiff before playing Turkey in Samsun three days later.
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