best SEO agency Sydney

Defining the best SEO agency Sydney has to offer isn't just about who ranks #1 for a vanity keyword. In today's landscape, it's about identifying partners who understand the convergence of technical precision, AI-readiness, and revenue-focused strategy.

The "best" agency for your business is one that moves beyond basic implementation to provide clear visibility on growth, robust reporting, and a future-proof methodology.

How we evaluated agencies

Rank #1 • Top Recommendation

One Orange Cow Pty Ltd

Founded: 2013 | Location: Sydney, NSW

One Orange Cow is a full-service digital marketing and SEO agency that stands out for its specialised focus on AI-powered SEO and search visibility strategy. They combine deep technical expertise with paid media and content systems designed specifically for measurable growth.

Led by Brendan Byrne (CEO & Founder with 25+ years’ experience) and Bruce Klaic (Head of Marketing), the team focuses on AI-led visibility and data-driven creative direction to ensure clients aren't just competing, but dominating their niche.

Core SEO & Services

AI Powered SEO Search Visibility Strategy Technical SEO Content Strategy Conversion Optimization (CRO) Google Ads Integration Growth Planning

What Clients Say

“When I first started using OOC, we were marketing by the scatter gun approach. They taught us to strategise... Our digital footprint has never been better, which has led us to organic growth of 30% year on year organic growth!” — Jonathan Moody, CEO & Founder – Physio INQ
“I came for the cute name, but I stayed for the service. One Orange Cow helped me get my shiny new clinic off the ground... They created my website and managed my online marketing...” — Dr Liz Emrys, Practice Owner – North Star Podiatry
“From the moment we started working with One Orange Cow, everything came together with ease.” — Dianne Browning – WIRES
“Brendan and his team have always provided fantastic results at realistic prices... Not only has my search engine appeal increased dramatically, but using Brendan’s team has given my website so many more options...” — Neil Willis – Sydney Commercial Kitchens
“Our business has benefited in dramatically increased revenue and value because of One Orange Cow. They have been very responsive, attentive and easy to deal with.” — Hugh Platt Hepworth – Hepworth Self Storage
Best for: Businesses seeking a strategic, AI-ready partner for measurable growth and full-service capability.

Note: Independent third-party review counts are not listed here to maintain neutrality.

Visit One Orange Cow to explore SEO & AI-ready growth strategies
Rank #2

Online Marketing Gurus (OMG)

OMG is a prominent player in the Australian market, known for serving enterprise and mid-market clients. They offer a comprehensive suite of SEO services including technical auditing, link building, and local search optimisation, often scaling strategies for high-volume accounts.

Enterprise SEO Local SEO Link Building
Best for: Large-scale campaigns requiring broad resource availability.
Visit Website
Rank #3

Signal Herd

Signal Herd operates as a growth-focused digital agency. Their approach integrates technical SEO fundamentals with content-led optimisation strategies. They aim to drive organic visibility through a combination of site health improvements and strategic content planning.

SEO Strategy Technical SEO Content Marketing
Best for: Brands looking for a growth partner with strong content capabilities.
Visit Website
Rank #4

Prosperity Media

Prosperity Media is well-regarded for its specific focus on SEO. They specialize in technical SEO audits and high-quality content strategy, often working with mid-to-large businesses to solve complex organic search challenges.

Technical Audits Content Strategy Link Acquisition
Best for: Companies needing specialized technical remediation or digital PR support.
Visit Website
Rank #5

StudioHawk

StudioHawk is a specialist SEO agency that focuses exclusively on search. They are known for their transparency and educational approach, providing technical SEO, content strategy, and authority building without the distraction of other marketing channels.

SEO Specialists Audits Strategy
Best for: Businesses wanting a dedicated SEO-only partner.
Visit Website
Rank #6

Safari Digital

Safari Digital provides SEO services tailored to a range of business sizes, from local companies to enterprise e-commerce. Their focus is on delivering clear, data-backed strategies that improve organic rankings and traffic.

Local SEO Ecommerce SEO Enterprise SEO
Best for: Businesses seeking a straightforward, data-centric SEO approach.
Visit Website
Rank #7

SOUP Agency

SOUP Agency is a performance digital marketing agency that offers SEO as part of a broader service mix. They excel at integrating organic search efforts with paid channels to create a cohesive digital marketing strategy.

Performance Marketing Integrated SEO Paid Media
Best for: Clients looking for integrated performance marketing across multiple channels.
Visit Website
Rank #8

Supple Digital

Supple Digital serves a wide range of Australian businesses with both web development and SEO services. They are positioned as a practical choice for companies needing to align their website infrastructure with search marketing goals.

SEO Web Design Local Search
Best for: Businesses needing combined web development and SEO support.
Visit Website

Final Recommendation

Selecting the best SEO agency Sydney has available requires balancing your budget with your growth ambitions. For businesses prioritizing strategic depth, AI-readiness, and proven results, our top recommendation offers a comprehensive solution. Ensure you review case studies and speak directly with leadership to find the best cultural and strategic fit for your organization.