Here are the most popular global / U.S. streaming services in 2025 (ranked roughly by reach or subscriber totals and including notable metrics). Sources cited for the key figures and trends.

1. Netflix — still the largest global streamer (around 300+ million total subscribers; big growth in ad-supported tier in 2025). (ft.com)

2. Amazon Prime Video — one of the largest reach figures (commonly reported around ~200 million+ global Prime/Video users). (diversetechgeek.com)

3. Disney+ (incl. Disney-owned streaming portfolio, where relevant) — major global player (reported 100–160+ million subs in 2024–25 depending on what’s counted). Disney-owned services also perform strongly in US viewing minutes. (trefriw.org)

4. Max (HBO/Warner combined offerings) — often reported in the ~90–100 million range when combined with some legacy pay-TV counts; a top-four global/US service. (trefriw.org)

5. Paramount+ — mid-pack global presence (tens of millions of subscribers; frequently inside the top 6–8 lists). (trefriw.org)

6. Hulu — important U.S. streamer (tens of millions of subs; strong U.S. viewership for originals). Hulu is typically counted separately in U.S. rankings. (trefriw.org)

7. YouTube (incl. ad-supported and Premium) / FAST aggregators (Roku Channel, Tubi) — while different business models than SVOD, YouTube and free/ad-supported FAST channels are among the most-watched streaming destinations in the U.S. in 2024–25. Roku’s platform and The Roku Channel rank highly for U.S. viewing hours. (statista.com)

8. Peacock, Apple TV+, ESPN+, and smaller niche services (Peacock ~30–40M; Apple TV+ and ESPN+ tens of millions each; premium niche services like Starz/Paramount libraries follow behind). These services round out the larger set of widely used platforms in 2025. (trefriw.org)

Notes and caveats:

• “Most popular” can mean different things: total paid subscribers, active users, viewing hours, or peak concurrent viewers. Different reports use different definitions (and some firms bundle legacy cable counts or FAST viewership into totals). I cited subscriber/viewing reports and Nielsen/industry coverage where available. (ft.com)
• Exact numbers vary by source and by whether parent-company bundles (e.g., HBO Max + linear HBO, or Prime members vs. Prime Video-only) are included. For the largest services (Netflix, Amazon, Disney+), multiple independent outlets reported them as the top three in 2024–25. (ft.com)

If you want, I can:

• Give a ranked top-10 with the most-cited subscriber numbers and dates (so you can see which source gave which figure), or
• Provide a U.S.-only ranking by viewing minutes (Nielsen) rather than global subscriber totals.