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Leon Jiu Jitsu Martial Arts

4.4 ★★★★☆ 31 Google reviews · BJJ gym in Los Alamitos, California

BJJ gym Free trial Affiliated Kids & teens Competition team

Affiliated academy — reviews and the gym's own info point to a recognized BJJ lineage or affiliation (think Gracie Barra, 10th Planet, Renzo Gracie, Alliance, Atos or Checkmat). If lineage matters to you, ask which affiliation the academy belongs to and under whom the head instructor earned their black belt.

Plan your first class

  • Free trial or intro class most gyms welcome new members with a free trial or intro class — check their site or give them a call to book your first session
  • Kids & youth classes kids and youth BJJ classes — built around discipline, focus, and confidence
  • Open mat open-mat rolling sessions for members to practice live — always optional and at your own pace
  • Competition team a competition team for members who want to test themselves at tournaments
  • Today see hours ·
  • Website & schedule leonjiujitsu.com — book classes and see the live schedule
  • Phone (562) 852-9600

Hours

Monday 9:30 AM–12 PM, 4:30–8:30 PM
Tuesday 9:30 AM–12 PM, 5:30–8:30 PM
Wednesday 9 AM–12 PM, 4:30–8:30 PM
Thursday 9:30 AM–12 PM, 5:30–8:30 PM
Friday 5–8 PM
Saturday 9 AM–12 PM
Sunday Closed

Hours shift for holidays, seminars, and open-gym times — worth a quick check before a special trip.

The classes they run

BJJ classes on the schedule at Leon Jiu Jitsu Martial Arts, confirmed in members' own reviews and the gym's own info — not guessed from the sign out front.

📘 Fundamentals 2 mentions

“If your looking for a gym that has a strong foundation on Jiu-Jitsu fundamentals or the capability to guide you through competition circuit look no further.”

All gyms that run fundamentals →

🧒 Kids BJJ 6 mentions

“My daughter has been with Leon for three years, starting when she was just 3 years old, and I’ve seen significant improvements in both her technique and confidence.”

All gyms that run kids bjj →

🏆 Competition Team

“Professor Bill and his crew are welcoming to traveling Jiu Jitsu competitors, regardless of affiliation.”

All gyms that run competition team →

🔓 Open Mat

“My jiujitsu school HQ Great Family enviroment open mat come check it out”

All gyms that run open mat →

What members say

The things reviewers bring up again and again across 31 Google reviews — in their own words.

🧑‍🏫 expert, high-level coaching 6 mentions

“The incredible professor, despite being blind, demonstrates an unwavering commitment to the art and his students.”

🤝 no-ego, friendly academy 11 mentions

“Stepping into this family-owned and family oriented BJJ gym feels like entering an arena of respect, discipline, and dedication.”

📘 strong technique & fundamentals 4 mentions

“My daughter has been with Leon for three years, starting when she was just 3 years old, and I’ve seen significant improvements in both her technique and confidence.”

🧒 strong kids program 3 mentions

“I highly recommend this place for adult training and coach Bill is great with children.”

active competition team 3 mentions

“Professor Bill and his crew are welcoming to traveling Jiu Jitsu competitors, regardless of affiliation.”

🧠 builds confidence & discipline 4 mentions

“My daughter has been with Leon for three years, starting when she was just 3 years old, and I’ve seen significant improvements in both her technique and confidence.”

From the reviews

I have nothing but the utmost respect for the coaches at Leon. Their dedication to the art and thoughtfulness in teaching are truly commendable. My daughter has been with Leon for three years, starting when she was just 3 years old, and I’ve seen significant improvements in both her technique and confidence.

★★★★★ — Sofia, Oct 2024

I live in the East Bay and dropped in to stay active while traveling for a work trip. All I can say is this is an amazing place to train. Professor Bill was very welcoming and allowed me to train. From the start Leon Jiu Jitsu is family oriented and serious about their training.

★★★★★ — Dominic, Jul 2022

Walked into this gym 2 1/2 years ago and it’s been the greatest experience I’ve had in a mix martial arts gym. The instructor coach Bill Tetsch has years of coach and competition experience.

★★★★★ — Joey, May 2026

Bill Tetsch is a very dedicated black belt instructor and really cares about his students. His gym is very family friendly and evryone is welcome.

★★★★★ — Jake, Apr 2016

Excerpts from public Google reviews. Read all 31 reviews →

Your first BJJ class at Leon Jiu Jitsu Martial Arts

Nervous about walking into a BJJ gym for the first time? Almost everyone is, and good coaches expect beginners to come through the door. Here's what to know. What to expect: a typical first class is a warm-up, then drilling basic positions and escapes with a partner — not hard sparring. Rest whenever you need to; no one will bat an eye. What to wear: athletic wear you can move in (or a gi if you have one); you'll train barefoot on the mats. What to bring: water and a mouthguard if you have one — many gyms lend a loaner gi for a first class, so it's worth asking when you call. As you keep training you'll add your own gi (or a rashguard and shorts for no-gi) and a mouthguard. Live rolling eases in gradually, once your fundamentals are solid. Arrive 10–15 minutes early to sign a waiver and meet the coach. It gets easier fast — most people feel far more at home by their third class.

BJJ is a contact sport. Ease in, tap early and often, listen to your coaches, and if you have any injuries or health concerns, mention them before class and check with a doctor if you're unsure.

Where to find Leon Jiu Jitsu Martial Arts

3351 Katella Ave, Los Alamitos, CA90720

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Listing verified July 2026 from public business records and member reviews. Something out of date? Report a correction. Own this gym? Claim your listing — it's free.