310 million. No, this is not some funding news of another Silicon Valley tech startup.
It’s the number of people who are using LinkedIn actively. Now, not everyone from this 310 million group would belong to Silicon Valley, right?
Most people make the mistake of associating LinkedIn Ads with just flashy tech companies — you know, the ones with big budgets, massive followings, and a long line of VC funding.
But having worked with 120+ small B2B companies across 10+ countries in the past decade, we’ve learned something that completely flips that assumption on its head 👇
Industries that are niche.
Industries that sell to other professionals or companies.
Industries where trust and credibility matter more than flashy aesthetics.
And the best part? These “unusual” industries often face very little ad competition, which means lower CPMs and higher-quality leads.
Let’s walk through 7 such B2B industries where LinkedIn Ads have been quietly doing wonders.
1. Healthcare Companies (Selling B2B)
You may have come across LinkedIn’s own showcase of healthcare advertisers, featuring global giants like Johnson & Johnson, GE Healthcare, and Siemens Healthineers.
But here’s what they don’t tell you.
✅ There’s a whole world of smaller healthcare companies, including diagnostic labs, medical equipment suppliers, health SaaS startups, corporate wellness firms, and so on. These kinds of companies are using LinkedIn Ads to reach hospital admins, HR heads, and CXOs at insurance companies.
We’ve worked with multiple healthcare brands whose ideal clients are decision-makers, not consumers. On LinkedIn, they’re able to speak directly to them — skipping gatekeepers, avoiding SEO battles, and generating qualified leads at a predictable cost.
Even better? These ads don’t need to be fancy. Just clear messaging and proof that you can solve real healthcare ops problems.
2. Drone Manufacturers
This one might surprise many. But it’s not just defense contractors who benefit from LinkedIn.
Take Flyability, for example — a Switzerland-based drone manufacturer that sells indoor inspection drones to industrial clients.
We ran a LinkedIn Ads campaign for them that focused on safety heads, compliance officers, and procurement managers in sectors like oil & gas, mining, and nuclear plants.
🎯 Result? 15–18 high-quality leads per month, consistently, without running ads anywhere else.
Here’s the secret sauce:
- The audience was niche, high-value, and difficult to reach via Google Ads.
- LinkedIn allowed us to target decision-makers by job title and industry with pinpoint precision.
- The campaign ROI beat every other acquisition channel they had tried.
3. HR Consultancy Firms
If you run an HR or talent consultancy, chances are you spend too much time on referrals or cold emails.
What if you could show up right where CHROs, TA Heads, and People Ops Leaders hang out daily?
We’ve seen boutique HR firms generate predictable leads by simply:
- Promoting free hiring audits via LinkedIn Lead Gen Forms
- Offering downloadable guides for remote hiring or DEI practices
- Running case study carousels that prove you know what you’re doing
👌Check out how we helped FlatWorld, a tech-recruitment agency, reduce its Acquisition Cost by ~3X
Why it works: HR buyers love clarity. LinkedIn lets you speak their language, with the credibility that email can’t replicate.
4. Solo Coaches & Consultants
You don’t need a huge agency or a big team to win on LinkedIn Ads.
Take Andrea Nordling, for example, a solo nutritionist coach helping other health professionals grow their practice.
We worked with Andrea to optimize her LinkedIn profile and launched a custom ad campaign tailored to her ICP.
🎯 Result? 18–22 leads per month of health coaches and nutritionists who wanted to learn from her.
Set a clear goal, build a solid and strategic plan, and be consistently experimental with the response. LinkedIn ads will let you reach your dream prospects directly and nurture them efficiently, even with a small audience.
5. Factory Equipment Manufacturers
You won’t find them dancing on Instagram. But they’re doing real business.
Many factory equipment manufacturers– whether they make CNC machines, industrial chillers, or safety tools — struggle with:
- Low website visibility
- Poor SEO traction
- Long sales cycles
But their buyers — procurement heads, plant managers, factory operations directors — are all on LinkedIn.
We’ve seen equipment makers generate strong ROI with:
- Whitepaper ads (e.g., “How to reduce factory downtime by 32%”)
- Product video ads (targeted by industry)
- Ads offering free factory audits or cost calculators
These aren’t very snazzy campaigns. But they work especially when your average deal size is in 5 or 6 figures.
6. Law Firms With Corporate-client Goals
Law firms have been slow to undergo digital transformation so far.
And if you are a lawyer, that’s your cue to go digital as soon as possible because the competition is still fairly less for you.
If you’re a B2B law firm or a solo practitioner dreaming of working with funded startups, fast-growing companies, or mid-size corporates, you need to be on LinkedIn.
Why? Because:
- Founders are active here.
- COOs, CFOs, and Legal Heads look for specialists.
- You can narrowly target based on industry, company size, and seniority.
Here’s how you can build a momentum as a lawyer with LinkedIn ads:
- Offer free legal audits for startups
- Build and offer “Founders’ Legal Kit” downloads in your LinkedIn ads
- Run video ads explaining IP protection for SaaS companies
The perception that LinkedIn is “too expensive” for law firms is a myth. If you land even one 6-month retainer client, your campaign pays for itself multiple times over.
7. Accountants & Financial Consultants
While accountants may not be flashy marketers, their ideal clients — B2B founders, CFOs, and finance teams — live on LinkedIn.
Ads offering:
- Startup tax saving tips
- Free consultations
- Fractional CFO services
…all perform extremely well, especially if you niche down by sector (e.g., accountants for health tech startups).
We’ve worked with accounting firms that went from 0 inbound leads to 5–7 qualified discovery calls per month. All from well-written, precisely targeted, and non-salesy LinkedIn ads.
Final Thoughts
This list of hidden B2B niches could go even longer. Because there are still many traditional B2B companies that are yet to go full-on digital.
(Dunder Mifflin, where are you?)
All in all, our motive of writing this article is to let you know that LinkedIn Ads aren’t reserved for the giants.
In fact, they’re often more impactful when used by smaller B2B businesses in niche sectors — companies that sell to decision-makers and need to build trust fast.
The 7 industries we listed above are just a glimpse. But if you’re in any B2B business that:
- Sells high-ticket services or products
- Targets other professionals or businesses
- Has a specific ICP (ideal client profile)
- Have an LTV (Lifetime Value) of at least $10K or higher
…then LinkedIn Ads might just be your best-kept secret to growth in 2025.
Pro tip? You don’t need a huge budget. You just need a strategy, belief, and a vision.
Curious how your B2B niche is doing with LinkedIn ads?
The only way you can know it is by analyzing your competitors in similar B2B niches to yours.
