LinkedIn: LinkedIn is a professional networking site that allows you to connect with potential clients and customers in your industry. You can search for potential leads by location, job title, and industry.

Niche-specific forums and groups: Many industries have their own forums and groups where professionals in the field can connect and share information. Joining these groups can give you access to potential leads and clients.

Industry-specific websites and directories: Many industries have websites and directories that list companies and professionals within the field. These can be a great place to find leads for your niche.

Social media platforms: Platforms like Facebook, Twitter and Instagram can be a great place to find leads within your niche. You can use hashtags and keywords to find leads and connect with them.

Trade shows and events: Attending trade shows and events in your industry can be a great way to connect with potential leads and build relationships.

Google search: You can use Google search to find leads within your niche. You can use search operators like site:domain.com and intext:keyword to find leads.

Referral Networks: Referral networks are a great way to find niche specific leads. They are groups of professionals who refer leads to each other.

Niche-specific Lead Generation Services: There are lead generation services that focus on specific niches, these services can be a great way to find leads within your niche.