Bithoraxoid (bxd) is a long non-coding RNA found in Drosophila. It silences the expression of the Ultrabithorax (Ubx) gene by transcriptional interference.
bxd or BXD may refer to:
- The bithoraxoid gene, bxd
- The ticker symbol for the CBOE DJIA BuyWrite Index (BXD)
- Bade Airport in Indonesia
- BXD, a planned line on the Luas light rail system in Dublin, Ireland
- Buxted railway station in south east England