The Dutch were not part of the Vikings in the historical sense, but the people who lived in the region that is now the Netherlands did have interactions with Viking groups during the Viking Age, which lasted roughly from the late 8th century to the early 11th century.
The Vikings, primarily from present-day Scandinavia (Norway, Sweden, and Denmark), were known for their seafaring, trading, and raiding activities. As they explored and settled in various parts of Europe, they made contact with many different cultures, including the Frisians, Saxons, and other groups in what is now the Netherlands.
While the Dutch people, as a distinct national identity, did not exist during the Viking Age, the Frisians inhabited parts of the coastal areas that would become the Netherlands. Some Frisians engaged in trade with the Vikings, and there were instances of conflict and cooperation.
In conclusion, while the Dutch as we know them today were not part of the Vikings, their ancestors, particularly the Frisians, had contact with Viking culture and activities.