Here are some common use cases of **Ethereum**:

1. **Smart Contracts**: One of Ethereum's main features is **Smart Contracts**. These are automated contracts that are executed automatically between two parties once predefined conditions are met. They are used for various business agreements such as loans, service level agreements (SLAs), and more.

2. **Decentralized Applications (dApps)**: Ethereum is widely used for creating decentralized applications (dApps). These applications run on the blockchain, allowing peer-to-peer transactions without the need for intermediaries. They are used in fields like finance, gaming, and more.

3. **DeFi (Decentralized Finance)**: Ethereum is at the heart of DeFi systems, which offer financial services like lending, borrowing, interest-bearing accounts, and even stock trading without the need for banks or intermediaries. It operates on a decentralized network, providing users with more control over their finances.

4. **NFTs (Non-Fungible Tokens)**: Ethereum is used to create **NFTs**, which represent ownership of digital assets like art, videos, music, or in-game items. NFTs have gained popularity in various industries, especially in the digital art world.

5. **Supply Chain Management**: Ethereum’s smart contracts and distributed ledger technology are being used to track supply chains. This helps make the process more transparent, secure, and efficient by allowing for decentralized tracking of goods.

6. **Tokenization**: Ethereum allows the creation of tokens that can represent various assets, such as real estate, shares, or other valuable items. This makes it easier to trade and transfer ownership of these assets in a decentralized way.

Additionally, there are continually emerging new use cases for Ethereum, unlocking new possibilities for blockchain technology.