Forest will travel to Spain for a training camp next month as part of its preparations for the 2023/24 Premier League campaign.
In the midst of a seven-day trip, Forest will face Valencia and Levante in training matches, both of which will take place behind closed doors.
The Reds will first be in action in Spain on Tuesday 18 July against Valencia, who Forest faced in a mid-season friendly back in December to mark the centenary of Mestalla Stadium.
The match will be played at the La Liga side's training ground, Ciudad Deportiva de Paterna, with kick-off at 7pm local time.
Four days later, Forest will conclude their trip with a friendly against Levante, who narrowly missed out on promotion to La Liga last season after losing to Alaves in the Segunda División play-off final.
The match will be played on Saturday 22 July (12pm kick-off local time) at Levante's training ground, Ciudad Deportiva de Buñol, before Forest return to England to continue its pre-season schedule.
A full list of pre-season fixtures will be confirmed in due course.