LD may refer to:
The Low-Density Lipoprotein (LDL) Receptor (LDL-R) is a mosaic protein of 839 amino acids (after removal of 21-amino acid signal peptide) that mediates the endocytosis of cholesterol-rich LDL.
LDS or Mormon cinema (informally Mollywood, a portmanteau of Molly Mormon and Hollywood) usually refers to films with themes relevant to members of The Church of Jesus Christ of Latter-day Saints.
The Conference Center, located in Salt Lake City, Utah, is the premier meeting hall for The Church of Jesus Christ of Latter-day Saints (LDS Church).
LDV Group Limited, formerly Leyland DAF Vans, was a British van manufacturer, based in the Ward End area of Birmingham.
LDS fiction (or Mormon fiction) is an American niche market of fiction novels featuring themes related to The Church of Jesus Christ of Latter-day Saints (the LDS Church, see also "Mormon").
The LDS edition of the Bible is a version of the Bible published by The Church of Jesus Christ of Latter-day Saints (LDS Church) in English, Spanish and Portuguese.
Lactate dehydrogenase A, also known as LDHA, is an enzyme which in humans is encoded by the LDHA gene.
The LDV Pilot is a panel van that was produced by LDV Limited from 1996 until 2006, and closely based on preceding models dating back to 1974 (which were in turn related to older models).