Blu-ray Disc recordable (or BD-R) refers to two optical disc formats that can be recorded with an optical disc recorder.

Blu-ray Recordables (BD-R) is the format of the next generation for disc recording. BD-R's biggest advantage over recordable DVDs is the storage capacity; a single layer BD-R disc can store 25GB and a dual layer BD-DL disc can store 50GB. While the DVD recordable format relies on a red laser to read & write data, Blu-ray discs use a blue-violet laser instead (hence its namesake). This allows data to be packed more tightly and stored in less space. Recordable Blu-ray media can fit more data even though it's on a disc that is the same size as a CD and DVD.