Dummett has been named in Chris Coleman's 23-man squad for the 2018 World Cup qualifier against Serbia at the Cardiff City Stadium on Saturday, 12th November (7.45pm kick-off).
And the in-form Mitrovic has been selected for his country's Group D clash with the Welsh, as well as Serbia's friendly against Ukraine at the Metalist Stadium in Kharkiv on Tuesday, November 15th.
United defender Dummett missed out on this summer's European Championships in France, but will be hoping to collect his third cap against Mitrovic's men.
The 22-year-old former Anderlecht frontman, meanwhile, is likely to spearhead Serbia's attack in Cardiff, and has 24 international caps and six goals to his name to date.