Unfortunately, since the TON ecosystem is still early, there's no official support for TON in the leading hardware wallets (as of October 2022). But hopefully official support is coming soon.
Unofficial support for Ledger is available from two places:
- https://github.com/ton-blockchain/ledger-app-ton (by core team)
- https://github.com/ton-community/ledger-app-ton (by TonWhales)
The downside of this approach is that support is not official by Ledger yet and some people don't like to install unofficial apps on their hardware devices.