In the United States, the President of the Senate is the Vice President of the United States, so right now that is JD Vance.

However, there’s also a closely related role that often confuses people:

  • The Vice President is President of the Senate and can preside over sessions and cast tie‑breaking votes, but is not a senator and usually is not present for day‑to‑day debates.
  • When the Vice President is absent, the Senate’s presiding officer is the President pro tempore , currently Senator Chuck Grassley of Iowa for the 119th Congress (2025–2026).

So if your question is “who is the president of the Senate?” in the constitutional sense, the answer is JD Vance; if you mean the senior senator who often presides in practice, that is Chuck Grassley as President pro tempore.

Information gathered from public forums or data available on the internet and portrayed here.