No, Nami is not in Romance Dawn.
Romance Dawn is a one-shot manga by Eiichiro Oda that was published in 1996. It served as the foundation for the popular One Piece series, introducing some of the key characters and concepts that would later become central to the story.
While Romance Dawn features Monkey D. Luffy, Shanks, and the infamous Red-Haired Pirates, Nami is not present in this early installment. She is introduced later in the One Piece manga, becoming a prominent member of the Straw Hat Pirates.
Nami's absence in Romance Dawn is understandable, as the story was a precursor to the grander narrative that Oda envisioned for One Piece. As the series developed, Oda introduced new characters and expanded the world, leading to the inclusion of Nami and other beloved characters.