As of January 21, 2025, here are the top 10 meme coins by market capitalization:

1. Dogecoin (DOGE): The original meme coin, created in 2013 as a parody of cryptocurrencies, featuring the Shiba Inu dog from the "Doge" meme. It has a market capitalization of approximately $56.71 billion.

2. Shiba Inu (SHIB): Dubbed the "Dogecoin killer," SHIB was created in August 2020 and has developed its own ecosystem, including a decentralized exchange called ShibaSwap. It has a market capitalization of around $15.13 billion.

3. Pepe (PEPE): Launched in 2023, PEPE is based on the popular Pepe the Frog meme. It has quickly gained traction, with a market capitalization of approximately $9 billion.

4. Floki Inu (FLOKI): Named after Elon Musk's Shiba Inu dog, FLOKI has gained a significant following. It ranks 52nd overall with a market cap of $1.68 billion.

5. Bonk (BONK): A Solana-based meme coin, BONK has gained popularity within the Solana ecosystem. It ranks 48th overall with a market cap of $1.96 billion.

6. Dogwifhat (WIF): Featuring a Shiba Inu wearing a hat, WIF has gained significant attention, ranking 35th overall with a market cap of $2.49 billion.

7. Brett (BRETT): A newer meme coin that has quickly gained attention, BRETT ranks 65th overall with a market cap of $1.23 billion.

8. Popcat (POP): Based on a popular internet meme, POPCAT has seen significant growth, ranking 84th overall with a market cap of $801.25 million.

9. Mog Coin (MOG): A relatively new entrant in the meme coin space, MOG has quickly gained attention, ranking 10th among meme coins with a market cap of $710.09 million.

10. Baby Doge Coin (BABYDOGE): Created as a "son of Dogecoin," BABYDOGE has gained a significant following, ranking 8th among meme coins with a market cap of $983.88 million.

Please note that the cryptocurrency market is highly volatile, and market capitalizations can change rapidly. It's essential to conduct thorough research and exercise caution when investing in meme coins.