No, AirPods do not have "L" and "R" markings directly on the earbuds themselves.
Instead, Apple uses a more intuitive design where the left AirPod is slightly smaller than the right one. This subtle difference allows users to easily identify which earbud is which without needing explicit markings.
Additionally, the charging case for AirPods also has visual cues to distinguish the left and right sides. The case itself has a small indentation on the left side and a larger indentation on the right side. This helps users place the AirPods correctly in the case.
For a more definitive way to know which AirPod is which, you can refer to the charging case. The left side of the case will always correspond to the left AirPod, and the right side of the case will always correspond to the right AirPod.