The Toyota J40 is the model designation for a Toyota Land Cruiser 40 series made from 1960 until 1984 (in Brazil, where it was known as the Toyota Bandeirante, it was made from 1968 until 2001). Most 40 series Land Cruisers were built as 2-door SUVs with slightly larger dimensions than a Jeep CJ.

The model was available as the FJ40 series (with F engines) and also BJ40/41/42 (short wheelbase), BJ43/44/46 (middle wheelbase) or HJ45/47 (long wheelbase) designation where it had a Diesel engine. Land Cruisers built in Brazil from 1968 to 1993 - with Mercedes-Benz engines - received OJ40/45 (OJ50/55 from 1973) series chassis codes and those built from 1994 to 2001 - with Toyota engines - have BJ50/55 series model codes.

References to the series in this article will be to the J40 series unless referring to one of the petrol (FJ40/42 – 2WD) or diesel (BJ4#/HJ4#) models specifically.