Les Bleus will face the Socceroos in a friendly at the Parc des Princes in Paris on 11 October, before hosting the Finns at the Stade de France four days later in their final Group I qualifier for the 2014 FIFA World Cup Brazil™.
Centre-back Varane, 20, makes the squad despite only making his comeback from five months on the sidelines with a knee injury in Real's 4-0 win over FC Copenhagen in the UEFA Champions League on Wednesday.
"Varane was with us for two games in March," said Deschamps. "He had an injury that prevented him from taking part in our tour of South America in June, but he has now been training fully for three weeks and returned to competition yesterday.
"He has not played much, but his past performances with us made me think that the logical thing was for him to come back into the squad. I consider Raphael to be an important member of the France team."
Varane is joined in the squad by Mamadou Sakho, who earns a recall after leaving Paris Saint-Germain for Liverpool in search of playing time, as Adil Rami of Valencia misses out.
Further forward, Remy is rewarded for his good recent form in the Premier League with Newcastle by coming back into the national squad in place of the injured Andre-Pierre Gignac of Marseille.
"Remy scores goals, is capable of playing in several positions, and offers us pace and penetration," said Deschamps. "He gives us different options going forward."
Remy is one of four Newcastle players named, with midfielder Yohan Cabaye also back after ending a dispute with the English club.
Elsewhere, Manchester City's Samir Nasri keeps his place after making a positive impression on his return to the national set-up last month, while Deschamps keeps faith in Karim Benzema despite the Real Madrid striker having gone more than 20 hours without scoring for Les Bleus.
France trail Group I leaders Spain only on goal difference, but the reigning world champions have a game in hand, so Deschamps' side are already resigned to taking part in a two-legged play-off in November that will decide whether they go to Brazil.
Goalkeepers: Mickael Landreau (Bastia), Hugo Lloris (Tottenham Hotspur), Steve Mandanda (Marseille)
Defenders: Eric Abidal (Monaco), Gael Clichy (Manchester City), Mathieu Debuchy (Newcastle United), Patrice Evra (Manchester United), Laurent Koscielny, Bacary Sagna (both Arsenal), Mamadou Sakho (Liverpool, Raphael Varane (Real Madrid)