Is the Atlantic Ocean the Smallest Ocean?

No. The **Arctic Ocean** is the smallest (~14 million km²). The **Atlantic Ocean** is the **second largest** (~106 million km²), after the Pacific (~165 million km²). Order by area: Pacific > Atlantic > Indian (~70M) > Southern (~20M) > Arctic (~14M). The Atlantic's 106M km² includes marginal seas (Mediterranean, Caribbean, Baltic, North Sea, etc.).