Yes, you can buy Bitcoin in Bangladesh. While the country has had a complicated history with cryptocurrency regulations, it is still possible to purchase Bitcoin through international exchanges.

The most popular and trusted exchanges where you can buy Bitcoin in Bangladesh include:

1. **Binance** - One of the largest and most well-known exchanges globally. Binance offers a wide range of cryptocurrencies, including Bitcoin.

2. **Kraken** - Another reputable exchange with a long-standing history in the cryptocurrency space. Kraken provides a secure platform for buying and selling Bitcoin.

Other exchanges that might be available include **LocalBitcoins** or **Paxful**, where you can buy Bitcoin directly from other users.

Always ensure you are complying with local laws and regulations regarding cryptocurrency transactions, as these can change.