Technically: No, Pathfinder is not D&D. Colloquially: Yes, many would consider Pathfinder a form of D&D, as Pathfinder (1e) is a direct descendant of D&D 3.5, so interconnected that many refer to it as "3.75" or "3.

Are D&D and Pathfinder the same?

Informally nicknamed D&D version 3.75, The first edition of Pathfinder is a modification of version 3.5 of Dungeons & Dragons and is intended to be compatible with the older game. ... The game has also been modified compared to D&D version 3.5. Changes were made involving balance between different game elements.

Is Pathfinder better than D and D?

Dungeons and Dragons has remained popular for nearly 50 years, but Pathfinder is also gaining popularity. With so many new games coming out, D&D has managed to definitively stay at the top of the pack in terms of popularity and profits, especially its latest release, the famous Fifth Edition. ...