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Fourth Dimension Jiu Jitsu

5 ★★★★★ 33 Google reviews · BJJ gym in Manassas, Virginia

BJJ gym Beginners welcome Kids & teens No-gi Competition team

Plan your first class

  • Beginner-friendly all levels welcome, including total beginners — you don't need to be fit or have any experience to start
  • Kids & youth classes kids and youth BJJ classes (ages 2–16) — built around discipline, focus, and confidence
  • Women's classes dedicated women's BJJ classes — a welcoming space to train and start out in
  • No-gi no-gi grappling classes — training in a rashguard and shorts, with faster scrambles and a natural bridge to MMA
  • Competition team a competition team for members who want to test themselves at tournaments
  • Today see hours ·
  • Website & schedule 4djiujitsu.com — book classes and see the live schedule
  • Phone (703) 853-5111

Hours

Monday 9 AM–8 PM
Tuesday 9 AM–8 PM
Wednesday 9 AM–8 PM
Thursday 9 AM–8 PM
Friday 9 AM–8 PM
Saturday 9 AM–8 PM
Sunday 9 AM–8 PM

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 Fourth Dimension Jiu Jitsu, confirmed in members' own reviews and the gym's own info — not guessed from the sign out front.

📘 Fundamentals 2 mentions

“Zack heavily focuses on the the fundamentals which other gyms often forgets.”

All gyms that run fundamentals →

🧒 Kids BJJ 2 mentions

“Great place for kids to learn self defense techniques and confidence also motivation”

All gyms that run kids bjj →

🏆 Competition Team 4 mentions

“Zack and Caitlin are both phenomenal jiu jitsu practitioners and seasoned competitors.”

All gyms that run competition team →

🛡️ Self-Defense

“Great place for kids to learn self defense techniques and confidence also motivation”

All gyms that run self-defense →

🌱 Beginners 3 mentions

“Having trained with Zack, I can say that his commitment and creative approach to Jiu Jitsu has made him a valuable instructor for both beginners and experienced students.”

All gyms that run beginners →

Other martial arts here

BJJ gyms are usually multi-discipline. Here's what else members mention training under the same roof at Fourth Dimension Jiu Jitsu — mined from their reviews and the gym's own info.

Disciplines are mined from reviews and the gym's own info — they show what members have trained, not a formal class guarantee. If you specifically want MMA, muay thai, or wrestling alongside your BJJ, confirm the current schedule with the gym.

What members say

The things reviewers bring up again and again across 33 Google reviews — in their own words.

🧑‍🏫 expert, high-level coaching 2 mentions

“Great instruction and great community, I have thoroughly enjoyed my time here and I have felt huge improvements in my Jiu Jitsu.”

🤝 no-ego, friendly academy 8 mentions

“Whether you’re looking to train, get in shape, or just be part of a strong, supportive environment, this gym is the real deal.”

📘 strong technique & fundamentals 5 mentions

“Great place for kids to learn self defense techniques and confidence also motivation”

active competition team 4 mentions

“Zack and Caitlin are both phenomenal jiu jitsu practitioners and seasoned competitors.”

🧼 clean, well-kept mats 10 mentions

“Dropped in for a class while in the area and was impressed by the clean, spacious facility and Zach’s instruction and enthusiasm.”

🧠 builds confidence & discipline 6 mentions

“It’s inspiring to watch someone turn their passion for jiu-jitsu into a space that builds confidence, discipline, and community.”

From the reviews

“I’m so proud to see Fourth Dimension open its doors! It’s inspiring to watch someone turn their passion for jiu-jitsu into a space that builds confidence, discipline, and community. The gym already has a positive energy, and I can tell it’s going to be a place where people grow both on and off the mats.

★★★★★ — Bridget, Jun 2025

Excellent instruction from a high level competitor. Great people to train with. The instruction gives precise details that are unmatched in other gym environments. Instructors genuinely care about you learning the art of jiu jitsu and the ability to be an effective grappler.

★★★★★ — Mattheu, Jun 2025

If you’re looking for a place to train hard, learn deeply, and be part of a strong BJJ community, Fourth Dimension is it. Caitlin & Zack are amazing and highly knowledgeable. Highly recommend!

★★★★★ — Allie, Jun 2025

Zack and Caitlin are both phenomenal jiu jitsu practitioners and seasoned competitors. 4d is a family owned small business that was created with a lot of thought, effort and love. If you’re in the Manassas area and beyond do yourself a favor and get started today. You can’t go wrong becoming a part of this community.

★★★★★ — Adam, Sep 2025

Excerpts from public Google reviews. Read all 33 reviews →

New to BJJ? Start at Fourth Dimension Jiu Jitsu

Fourth Dimension Jiu Jitsu comes up as a beginner-friendly gym, going by their listing and members’ reviews. If you've never rolled or set foot on a mat, that's exactly who a good beginners program is for. A few things worth knowing before your first week. First, you don't need to be fit or flexible to start — you get in shape by training, not before it, and coaches scale the intensity to you. Second, you won't be thrown into hard rolling — reputable gyms build fundamentals (positions, escapes, and basic submissions) for weeks, live rolling eases in gradually, and tapping early keeps every roll safe. Third, all levels really are welcome — ask about a dedicated beginners or fundamentals class time so your first session is alongside others who are also starting out, and leave your ego at the door. Most gyms are happy to let you watch or try a class first, so reach out before you commit.

Check beginner classes on their site

Your first BJJ class at Fourth Dimension Jiu Jitsu

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 Fourth Dimension Jiu Jitsu

10450 Dumfries Rd, Manassas, VA20110

Get directions

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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.