The musician, writer, and animal rights activist, recently revealed the facial inking, which features small V and X letters next to his eye.
He took to Instagram to discuss the reason behind the ink - and what it represents to him.
"All dressed up for the @idaorg gala. Oh, and I’ve been asked about the VX by my eye; V is for vegan, X is for straight edge," he said.
"Straight edge because I simply can't be a good activist if I'm lying in bed sick and hungover until 5pm every day...
"And of course vegan because I care about animals, human health, climate change, rainforest deforestation, workers' rights, water use, famine, and all of the other horrifying things that are the result of using animals for food."
Another recent tattoo Moby picked up featured the words 'Animal Rights' on his arms - which he said was in celebration of his 32 years of veganism.
That inking - which was reportedly done by celebrity artist and fellow vegan Kat Von D - follows another recent piece on his neck which says 'vegan for life'.
32nd vegan anniversary
"As November is my 32-year vegan anniversary, I thought I'd get a tattoo (well, technically 12 tattoos) to celebrate," Moby captioned the image he shared on Instagram.
"I'm a vegan animal rights activist for many reasons, but ultimately because I believe at the core of my being that every animal has the right to live their own life, according to their own will."