Lonhro (foaled December 10, 1998) was a champion Australian racehorse who is now standing at stud. Nicknamed "The Black Flash", he was from the first crop of the champion Octagonal out of the Group One-placed Shadea (by Straight Strike), who also produced the Group One winner Niello (a younger, full-brother to Lonhro). Lonhro raced from two to five years of age and won 26 races, including 25 stakes races, ranging in distance from 1,100 to 2,000 metres.