No, Finns are not Slavic. The Finnish people belong to the Finno-Ugric language group, which is distinct from the Slavic languages. This means that while Slavic languages are part of the Indo-European family, Finnish is related to languages like Estonian and Hungarian.
The origins of the Finnish people can be traced back to various tribes that settled in the region around 2000-1000 BC, and their language and culture developed independently from the Slavic influences that emerged later in Eastern Europe.
While Finland shares borders with countries that have Slavic populations, such as Russia, the cultural and linguistic ties are quite different. Finnish has unique characteristics and roots that reflect its own history. Over the years, there may have been some cultural exchanges, but this does not change the fundamental differences between Finns and Slavic peoples.