According to Computerworld, Howard Dresner coined the term business intelligence in 1989 at Gartner Group. That seems odd, since a week before that story appeared Howard told me and a couple of other folks that he and his colleagues coined the term, not when he worked at Gartner, but previously when he worked at DEC.
Either way, it’s been established that Howard and his colleagues were several decades late; the term was first coined no later than the late 1950s. Whether anybody much used it in the interim is, of course, quite a different matter: I recall terms like decision support and executive information systems (EIS), but not “business intelligence” before the time frame in which Howard claims to have (re)introduced it.
By the way — that “Monash BI” link is NOT to anything I wrote. It’s something associated with Monash University, on the other side of the planet.