Nathalia Fernandez is an American politician serving as a Democratic member of the New York State Senate representing the 34th Senate District.

The New York State Senate is the upper house of the New York State Legislature, while the New York State Assembly is its lower house. Established in 1777 by the Constitution of New York, its members are elected to two-year terms with no term limits. There are 63 seats in the Senate. The Democratic Party has held control of the New York State Senate since 2019. The Senate Majority Leader is Andrea Stewart-Cousins.