The Hunger Games' Jena Malone has given her baby quite an unusual name

Jena Malone is known for playing Johanna Mason in the Hunger Games series. Photo / Supplied

Hunger Games actress Jena Malone has welcomed a baby boy into the world - and with him, a new entry into the pantheon of weird and wonderful celebrity baby names.

The 31-year-old star of films including Stepmom, Donnie Darko and Sucker Punch had a boy with her partner Ethan DeLorenzo, and announced the little bub's name overnight with a picture on her Instagram page.

Ladies and gentlemen, here's little Ode Mountain DeLorenzo Malone.

View this post on Instagram

The best weekend of our lives!!! What an incredible blessing to be chosen by this amazing , kind , gentle and beautiful soul to be his parents. Humbled and in complete awe that we get to experience the most ancient and transcendent love that exists. Thank you Ode Mountain DeLorenzo Malone.

A post shared by Jena Malone (@jenamalone) on May 31, 2016 at 9:26am PDT

Malone said the birth of her first child had been "the best weekend of our lives".

"What an incredible blessing to be chosen by this amazing, kind, gentle and beautiful soul to be his parents," she wrote on Instagram.

So how does the actress and musician - who played District 7 Tribute Johanna Mason in three of the Hunger Games blockbusters - stack up against other celebs when it comes to weird baby names?

Checking back on the last time we rounded up the oddest-named offspring of the rich and famous, we'd rank "Ode Mountain" somewhere between Ashlee Simpson's "Bronx Mowgli" and Penn Gillette's "Moxie CrimeFighter".

It's still got a way to go to beat our personal favourite - My Name Is Earl star Jason Lee named his son Pilot Inspektor.