Below is a list of bridges you can use, to transfer your funds from chain to chain. DYOR - this is just a collection. I have not used every bridge out there.
Keep in mind that many bridges, are also listed in the chains cheatsheets.
List of aggregators in this topic
Popular Bridges
- deBridge - TIP: farm airdrop!
- RocketX
- Celer Bridge
- Orbiter
- Synapse Protocol
- Across Protocol
More bridges
- Symbiosis
- Multichain
- Hop
- xPollinate
- Transit
- Wormhole (Portalbridge)
- LayerSwap
- ChainHop
- OwlTo Bridge - supports testnets
- PolyNetwork
- EvoDefi
TIP: If you need gas on any chain, check out: How to get gas on any EVM chain?
Network Specific
- Matic Bridge
- Orbitchain
- Ren Project
- xDAI Bridge
- KCC Bridge
- Nerve Bridge
- RelayChain
- Avalanche - ETH
- Meson
BTC bridges
If you have just BTC in a wallet, and want to get in DeFi:
Check your DeFI wallet holdings + yield farmsIf you are too lazy to figure out your route, this spreadsheet might help - or try an aggregator. I forgot who made it, he (or she) should probably add their Twitter @ in the sheets 
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