OMG is the first single album by South Korean girl group NewJeans.

NewJeans released their first extended play New Jeans on August 1, 2022, which had a strong presence on charts globally and was met with commercial and critical success.

[3] On November 10, during Hybe Corporation's annual community briefing on YouTube, CEO Jiwon Park announced that NewJeans' are slated to return with the release of their first single album OMG on January 2, 2023.

[6] Both teasers show a rabbit hopping in the middle of the logo, meant to symbolize the group's fanbase, known as "bunnies".

[8] In a brief statement to South Korean media outlets, ADOR CEO Min Hee-jin said, "If the debut album showcased NewJeans' summer, this single album will be one that showcases NewJeans' winter.