The incident reportedly took place during a recent meeting of European leaders.
Describing the moment, the Daily Mail reported that Frostadóttir appeared uncomfortable as she glanced towards a photographer standing to her right, who captured the awkward exchange.
Macron, meanwhile, appeared to be in high spirits, smiling and looking into her eyes as he leaned towards her, the newspaper reported.
The photograph has since triggered a flurry of humorous reactions and memes across social media platforms.
One social media user commented: "Frosty? More like French kissing. There's nothing frosty about her body language."
A very UN-frosty welcome: Emmanuel Macron leans in to greet Iceland's PM Kristrun Frostadottir at meeting of European leaders https://t.co/5wRneBLJmw
— Daily Mail (@DailyMail) November 12, 2026
Another user described the photograph as looking like "an advertisement for exclusive perfume or something similar".
A third commented: "Can you imagine if Trump did this?"
However, this is not the first time Macron's interactions with fellow world leaders have attracted social media attention.
An earlier video from the G7 Summit also sparked widespread online discussion after Macron was seen leaning towards Italian Prime Minister Giorgia Meloni and whispering something in her ear. Meloni's eye-roll following the exchange quickly became a talking point among social media users.