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Onyx Gymnastics

George's Heights, Building 15, Best Ave, Mosman NSW 2088, Australia

4.9 (21 reviews)

Photo Gallery

The photo shows a studio with pink and black reformer pilates equipment and circular mats on a black floor.
A female trainer is instructing a small group of young girls in gymnastics training at an indoor gym facility.
Three people are performing a yoga pose on mats in a brightly lit gym with gymnastic equipment visible in the background.
A female trainer leads a small group of children in what appears to be a gymnastics class on a padded floor.
A woman is helping a toddler take their first steps on a colorful yoga mat in a gym-like setting.

About Onyx Gymnastics

Onyx Gymnastics is a boutique gymnastics club tucked into the leafy surrounds of George's Heights in Mosman, with additional training space at Shore School in North Sydney. Built around a small, nurturing studio environment, Onyx focuses on developing strong foundations in a setting that prizes safety, confidence and genuine enjoyment over crowded class sizes. Families consistently praise the coaching team for their patience and ability to draw the best out of every child, including those who need a little extra energy and engagement.

The club caters to a wide span of ages and abilities, from tiny first-timers finding their feet to dedicated young athletes pursuing a competitive pathway. Beyond regular structured sessions, Onyx brings a community feel to the lower north shore, supporting children as they build coordination, strength and self-belief week after week. Whether your little one is taking their very first leap onto the mats or chasing real progress in the sport, Onyx offers an attentive, encouraging home for gymnastics in Mosman.

Classes & Programs

Gymnastics for Kids & Teens (ages 4-14)Little Movers (under 5s)ONYX EDGE Competitive ProgramAdult gymnasticsPrivate lessonsSchool holiday clubBirthday parties

Facilities & Amenities

Mosman studio (George's Heights) Additional training at Shore School, North Sydney

Who It's For

Children aged 4-14Toddlers under 5Competitive young gymnastsAdultsBirthday party groups

Membership & Pricing

Free trial Free trial classes available for new starters
Government vouchers Active Kids and Creative Kids vouchers accepted

* Prices from the studio's website and may change — confirm before joining.

Location

Frequently Asked Questions

Does Onyx Gymnastics run classes for very young children? +

Yes. The Little Movers program is designed for children under 5, alongside classes for kids and teens aged 4-14.

Can I try a class before committing? +

Yes, free trial classes are available so new gymnasts can experience the studio before enrolling.

Are there options for competitive gymnastics? +

Yes. The ONYX EDGE competitive program supports gymnasts pursuing a higher-level pathway.

Do adults train at Onyx Gymnastics? +

Yes, adult gymnastics classes are offered in addition to children's programs.

Can I use Active Kids vouchers? +

Yes, both Active Kids and Creative Kids vouchers are accepted toward enrolment.

Pricing Information

Contact for pricing

Contact for pricing

Estimated starting price

• Pricing varies by plan and commitment

• Casual day passes often available

• Ask about free trials and student rates

Studio Information

Location Type

N/A

Style

pilates, reformer pilates, climbing

Google Rating

4.9 ★

Location

NSW

What to Know

  • Arrive 10–15 min early on your first visit
  • Bring a towel, water bottle and clean shoes
  • Check timetables and book classes ahead

Nearby Fitness Studios

Fitness Studios in Sydney

Onyx Gymnastics is one of NSW's fitness studios, offering professional training services for all fitness levels. Located in George's Heights, Building 15, Best Ave, Mosman NSW 2088, Australia, this studio provides high-quality training and fitness services for both beginners and experienced athletes.

As part of the Sydney fitness community, Onyx Gymnastics contributes to the local fitness scene. Whether you're looking for personal training, group classes, or specialist coaching, this studio offers a professional and welcoming environment for your next workout.