The properties are along the route between Colchester and Middlebury in a section that would be constructed next year.
State regulators approved the pipeline in 2013; their certificate of public good gives Vermont Gas the right of eminent domain.
The company says the landowners haven't responded to its efforts to contact them. James Sinclair, a company vice president, said the filings are a last resort and the company is hopeful the landowners will engage with them to reach an agreement. The company didn't name the landowners.
Vermont Gas says it has reached agreements with owners of about 85 percent of the parcels in the pipeline project and is engaged in negotiations with others.