The guillotine choke in BJJ is a front strangle. You wrap your arm around the opponent's neck with their chin under your armpit, then compress their throat or carotids by pulling your forearm up. It comes in several variations (arm-out, arm-in and high elbow), and each one fits a different situation. The defense is to free the chin first, then move the head to the correct side.
It is the most opportunistic submission in jiu-jitsu. It shows up the moment someone drops their head: on a takedown attempt, during a guard pass, or while coming up from turtle.
Why it works (and why it fails)
A good guillotine doesn't squeeze with the biceps. It squeezes with the blade of the forearm, the radius bone, which sits under the chin and against the throat. Then you pull up while opening your chest and pushing your hips away.
Beginners miss it for three reasons. The arm isn't deep enough, so the wrist ends up at their mouth instead of under the chin. They pull toward themselves instead of upward. And they stay square in front of the opponent without creating an angle.
The wrist has to come out on the far side of the neck. If you can't see your own hand poking through, the arm isn't deep enough.
The three guillotine variations
Arm-out guillotine
Both of the opponent's arms are outside. You wrap the neck, your free hand grabs your wrist and you pull. This is the best known variation and the least reliable. It takes a lot of squeezing and works mostly on a tired opponent or one diving head-first at your legs.
Arm-in guillotine
One of the opponent's arms is inside your wrap, between your arm and their neck. Their shoulder pushes into their own carotid, a bit like in a triangle choke. You need much less strength. That is why it is the guillotine we recommend learning first.
The detail: lock your hands palm to palm, or grab your wrist, and pivot toward the side of the trapped arm.
High elbow guillotine
Your elbow comes up high, over their far shoulder, and your forearm angles down under their throat. Your free hand grabs the wrist or goes over their shoulder. Squeeze by lifting the elbow toward the ceiling while driving the wrist down.
It is the variation that works best in no-gi and against heavy opponents. It needs a good feel for the angle, which is why many coaches save it for blue belts.
Where to hit the guillotine
Against a takedown. When the opponent shoots a double leg with the head low, the guillotine is the natural answer. Sit back to closed guard while keeping the grip, or finish it standing. Judokas will recognize the scenario: someone who dives at the legs without keeping the head up is exposed. In judo, direct leg grabs are penalized anyway, which makes this situation less common.
Out of closed guard. When they lean in to break your posture or to stand up, their head comes within reach. Sit up, wrap the neck, close your guard and lie back while pulling.
From half guard. During a guard pass, a passer who drops the head too low is exposed. One more reason not to put your head down at the wrong moment.
On the turtle. When they go to all fours, the head is exposed. Wrap over the top and roll.
The defense, step by step
- Hands first. With the hand on the side of their choking arm, grab their wrist and pull down. Your other hand goes over their shoulder.
- Chin. Tuck your chin and turn your head toward their side to free your throat.
- Side. Move your head and shoulders to the side of the choking arm, toward their hip. Your chest presses against theirs.
- Pass. From there, if they are in guard, you can often pass on the head side and end up in side control.
The fatal mistake is yanking your head back to escape. You help the guillotine by opening space under your chin.
Safety first
The guillotine can crank the cervical spine when the attacker pulls up while twisting the neck, especially when you are in their closed guard and they arch back. Squeeze on the throat, not on the back of the neck. And if a guillotine leaves you with neck pain, stop training for the day and see a doctor. Your neck does not get a second chance.
The drill to keep
A simple drill: one partner shoots a double leg at medium speed, and the other always answers with an arm-in guillotine, sitting back to guard. Ten reps per side. Then the partner starts defending. You build the reflex without having to think about it. To see where the guillotine fits among the other submissions and the logic of guard play, start with our Brazilian jiu-jitsu overview. For its cousin from behind, read our page on the rear naked choke.