The Imps have extended their partnership with Ellgia Recycling.
The silver club partner will continue to be City's official waste management and recycling partner for a further 24 months.
Imps director of commercial affairs Andrew Whitham said: "We are pleased to continue working with Ellgia Recycling as a silver partner.
"Their approach towards 100% zero waste to landfill and the implementation of sustainable recycling solutions means we can further our green initiatives at the football club."
Ellgia's marketing and new business development director David Chamberlain said: "Lincoln City are a fabulous football club with a fantastic tradition for being at the heart of the community.
"The partnership being extended is a great honour for us and we very much look forward to supporting the Imps both on and off of the pitch."