Here are the top global pizza chains (approximate ranking by number of locations, with the most-relevant sources and dates). Counts and positions vary by metric (stores vs. systemwide sales vs. country), so I note the source and date for each entry.

Top pizza chains worldwide (by locations — approximate)

1. Domino’s — ~21,300 stores (global, 2024/2025). (en.wikipedia.org, reuters.com)
2. Pizza Hut — ~19,800–20,000 restaurants (global, 2023–2024). (en.wikipedia.org)
3. Hunt Brothers Pizza — convenience-store program with ~7,000–10,000+ locations in the U.S. (company milestone reporting 10,000+ partnerships, 2024). (huntbrotherspizza.com, convenience.org)
4. Papa John’s — ~6,030 restaurants worldwide (as of Dec 29, 2024). (ir.papajohns.com)
5. Little Caesars — several thousand stores (U.S. footprint ~4,000+; described as the world’s #3 pizza chain by some industry reports; ongoing international expansion, 2024–2025). (franchise.org, reuters.com)
6. Telepizza / Telepizza Group (Spain / Food Delivery Brands) — ~1,300–1,600 stores (group figures cited in corporate/press releases). (franchise.telepizza.com, yum.com)
7. Dodo Pizza (Dodo Brands) — ~1,300–1,450+ stores across ~20–25 markets (2024–2025 company reporting). (dodobrands.io)
8. Marco’s Pizza — ~1,100–1,200 U.S. stores (and growing; listed among the top U.S. pizza chains by sales/units). (qsrmagazine.com)
9. Papa Murphy’s — ~1,100–1,200 stores (take-and-bake concept; U.S.-centric). (qsrmagazine.com)
10. PizzaExpress (and other regionals) — PizzaExpress ~300–400 locations (U.K./international); many regional chains (MOD, Jet’s, Sbarro, etc.) round out global/top-U.S. lists. (pos.toasttab.com, visualcapitalist.com)

Top chains by sales (U.S. / systemwide sales perspective)

• Domino’s leads by far in systemwide sales; Pizza Hut and Little Caesars follow, with Papa John’s and Marco’s further behind in U.S. pizza-industry sales rankings (QSR/industry reports, 2024–2025). (qsrmagazine.com, statista.com)

Notes

• “Top” can mean different things: total global units (above), systemwide sales, or brand revenue/market share. Numbers change frequently (store openings/closures, master-franchise deals), so counts above are approximate and tied to the cited reports (2023–2025).
• If you want a different ranking (by global sales, U.S. sales, or country-specific leaders), I can produce that specific list with updated figures and sources.