The Grammy-winner achieved the biggest opening week of her career last month after the release of her third studio album - You Seem Pretty Sad For A Girl So In Love.
Rodrigo, 23, revealed 333 exclusive Lego vinyls based on her chart-topping music will be hidden in record stores across the world in the coming weeks.
The event will see fans offered clues on social media to help them track down where the exclusive items have been hidden.
It is taking place to commemorate Rodrigo's collaboration with Lego Editions - which features a collection of five buildable items and minifigures inspired by her music, which will launch on August 1.
Rodrigo revealed her upcoming worldwide vinyl hunt during an intimate event at Licorice Pizza Records in Los Angeles which was attended by 100 fans – nicknamed Livvies.
"Getting to watch everyone explore the Lego Editions sets today and discover their favourite details was amazing," she said.
"We wanted to create something that felt different and something my fans could be part of.
"Kicking it all off at Licorice Pizza made it even more memorable. It was such a fun way to celebrate the collaboration with the Lego Group."
Julia Goldin, chief product and marketing officer at the Lego Group, said: "When we launched the Lego Editions Olivia Rodrigo collection, we wanted to invite fans to discover the stories, symbols and hidden details that make Olivia's world so special.
"The Lego Editions x Olivia Rodrigo vinyl hunt takes that idea one step further, transforming the excitement of discovery into a real-world adventure that brings fans together in record stores and communities around the world."
Further details about the upcoming vinyl hunt are yet to be announced, but fans have been encouraged to "keep an eye" on the social pages of Lego Group and Rodrigo.
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