Are there any rural broadband satellite providers that focus on backup internet for branch offices?

Yes. A number of satellite broadband providers and integrators position their services specifically for business continuity / backup internet at branch offices, retail sites, and remote locations.

Providers often used for branch-office backup

• Starlink Business — widely used as a primary or backup link for small branch sites, especially where terrestrial circuits are unreliable.
• HughesNet Business — offers satellite internet plans and managed services that are commonly used for failover/backup connectivity.
• Viasat Business — provides business satellite connectivity and enterprise-managed options, often marketed for continuity and remote sites.
• OneWeb / enterprise satellite partners — usually sold through managed service providers rather than directly, and often aimed at backup or resilient WAN use cases.
• SES / Intelsat / Eutelsat enterprise services — typically via channel partners for larger or more customized branch-office backup deployments.

What to look for

For branch-office backup, the most relevant features are:

• Static or business-grade IP
• Fast failover integration with SD-WAN, dual-WAN routers, or firewalls
• SLA / support for business continuity
• Low-latency options if you need VoIP or VPN performance
• Managed installation and monitoring
• Data caps or usage policies that fit backup-only use

Common deployment pattern

Satellite is often used as:

• Backup WAN behind fiber/DSL/cable
• Primary link in rural or temporary sites
• Out-of-band management for critical branch equipment

If you want, I can also give you:

1. a shortlist by budget,
2. a comparison of Starlink vs HughesNet vs Viasat for backup use, or
3. a recommended SD-WAN/failover setup for branch offices.