The 2025 Davis Cup World Group I was held from 12 to 13 September 2025. The thirteen winners of this round will qualify for the 2026 Davis Cup Qualifiers first round while the thirteen losers will play at the 2026 Davis Cup World Group I play-offs.
Twenty-six teams will participate in the World Group I, in series decided on a home and away basis.
These twenty-six teams are:
The 13 winning teams from the World Group I will play in the Qualifiers first round and the 13 losing teams will play in the World Group I play-offs in 2026.
#: Nations Ranking as of 3 February 2025.
Seeded teams
Unseeded teams