The photos included several of the happy couple, as well as a throwback one of Chris napping on the couch with his and Elsa's three children - India, Tristan and Sasha.
In another, Chris looks comically awkward as a giraffe sniffs him from behind and one depicts the Hollywood star holding up a Tasmanian Devil in a blanket.
We can't decide which is our favourite!
Fans loved Elsa's array of candid snaps and shared their birthday messages in the comments.
"U two make the cutest couple😍❤️," one remarked.
"HBD to the most handsome man in the World 🥳🥳🎊🎂🤩😍," penned another.
"Favourite husband leaves hope for many of us 😂😂😂 happy birthday," a third joked.
Chris also received birthday messages from his brothers Luke and Liam Hemsworth via Instagram as well, but their's were more cheeky than cute.
In both their posts, the eldest and youngest Hemsworth brothers shared photos of each other rather than Chris.
Whilst Liam simply shared a photo of himself and Luke mucking about under a waterfall with the caption "Happy birthday @chrishemsworth," Luke shared one of himself and Liam in Western Australia's Kimberley region.
"Happy birthday brother @chrishemsworth !! Love you mate will remember this trip the Kimberly region for ever. So many memories together 😂" he joked in his caption.
WATCH BELOW: Liam Hemsworth on the intense fights he and Chris Hemsworth had in their childhood. Post continues after video...
On Thursday, the Hollywood star shared his own message of thanks to everyone who wished him a happy birthday.
Chris shared several photos, presumably taken at his family's Byron Bay home where the area is currently in lockdown, that featured a very blue and delicious looking cake.
"Thanks for all the birthday messages! Had an epic day with the family and succeeded in devouring 75% of this awesome cake that my kids made before collapsing into a giant sugary heap of joy. Love you all ! Cheers 🎂 🥳," he captioned his post.