Hokutoryu Ju-Jutsu is a Finnish style of the Japanese martial art jujutsu created in 1992 by Auvo Niiniketo. The name of the style is Japanese and literally translates as Big Dipper-style, though is more commonly translated as North Star-style. The style uses a Japanese name to show respect to the country of origin of jujutsu. Practitioners of the style can be recognized by the logo of the style on their jujutsugi, a red inversed triangle.

The style does not rely on physical strength and instead relies on speed, timing and "martial eye". The techniques of the style contain punches, kicks, throws, takedowns, jointlocks, chokes, pins, breakfalls, clinch fighting, ground fighting and weapon techniques. The style also features sparring and training against both armed and unarmed opponents as an important part of the style. Style seeks to keep the principles of the traditional Japanese martial art while making it more compatible with western culture.

The style works for both men and women. Roughly 40% of its practitioners are female. Niiniketo notes that women are often more technically proficient, where as men can easily fall back to relying on brute force.

There are roughly 50 Hokutoryu schools around the world and the style has spread to several countries, including but not limited to: Russia, Belarus, Estonia, Iran, Ecuador, United States, Sweden and Norway. Most of the schools however are located in Finland.

Sōke Auvo Niiniketo (born 1954) (10th dan), "Father of Finnish Ju-Jutsu" has been training martial arts for most of his life, starting with boxing at the age of eight and winning the national youth championship in 1972 at 75 kg and winning bronze in national championship in 1974. Niiniketo was introduced to jujutsu in Stockholm, Sweden, during a boxing trip, which immediately appealed to him, seeing it as a complete martial art. After retiring from boxing, he started practicing karate, finding its kicks to be particularly effective. Though he enjoyed kihon, it was kumite that appealed to him the most.

Niiniketo later decided to start training jujutsu. Niiniketo received his first jujutsu belt ranks up to blue belt in Sweden, as Finland did not have a jujutsu dojo at the time. In 1977, he started the first jujutsu courses in Helsinki and soon after this he opened the first jujutsu dojo in Finland in the city. This was the founding of Hokutoryu.

In 1978, Niiniketo met English senseis Richard Morris and Robert Clark from World Ju-Jitsu Federation and co-operates with them to this day. This co-operation initially led to Hokutoryu losing all of its belt ranks when switching to a new system but Hokutoryu made quick progress in the new system. In 1979, Niiniketo received his jujutsu black belt from Morris and Clark.

During his time in Sweden, Niiniketo continued to cross-train in karate, ultimately winning the Finnish national heavyweight championship in 1979.