I’ve seen some Aikido and Aikijujitsu guys do very well against Jiu Jitsu. Then again, Aikido demos are known to be as scripted as Jiu Jitsu ones are!
I’d imagine something heavy into knees and elbows would do well, because you don’t need distance to throw this sort of attack. But, that’s just speculation, I’m no expert on Jiu Jitsu defense, as I’m not likely to be attacked by a single trained individual on the street, but more likely 3, 4 or 5, untrained thugs with weapons. Grabbing one of them and rolling on the ground for a minute is not a good defense in this sort of practical situation.

any good stand up style will counter ground fighting styles until your on the ground.thats why its important to cross train.the most effective single style would be freestyle karate,but that also depends on the practitioner.

I asked if perhaps a striking art — Tae Kwon Do, Karate-Do, or Kung Fu — might have an advantage because Ju Jutsu is internal (in-close fighting) versus the speedy strikes and kicks of the striking arts. My shihan responded that it truly depends on what part of Ju Jutsu you want to counter: do you wish to counter the throws? The wrist locks? The pressure points? The strikes?

Shihan concluded by saying that Ju Jutsu was developed to counter samurai sword attacks, but no art has been specifically developed to counter Ju Jutsu. If he had to pick one art that would best succeed at countering Ju Jutsu, it would be a fast-moving striking and kicking art, since the agility and speed could help avoid both locks and pressure points, the blocks would counter Ju Jutsu’s few striking techniques, and the strikes and kicks would serve as both distractions and attacks when placed in locks. So — Tae Kwon Do and Muay Thai, perhaps?

by the way to the guy above be charliewhatshisface i **** to disagree but kung-fu is the weakest lamest martial art to be found sure it looks pretty but on the street it dont cut it

Kung Fu und japanisches Jiu-Jitsu sind vermutlich die zwei wirkungsvollsten Straßenkampf-/Selbstverteidigungarten im Bestehen.

Vergessen Sie die kämpfenden Arten des Ringes wie MMA, BJJ, Muy, das siamesisch ist und wringen oder boxen, weil they' ll erhalten Sie nur getötet in einem Straßenkampf.