The National Endowment for the Arts (NEA) has listed their submission deadlines for the 2017 Grants for Organizations. They separate the funding into several sub-categories, including Art Works, Challenge America, Our Town, and Research: Art Works. Two of these programs are still accepting submissions for the 2017 grant year.
Art Works is a matching funds program that supports projects and activities that make a difference in their field or community. This program has an initial submission deadline of February 7th, but they ask you to register by January 25.
The Challenge America program seeks to share the arts with underserved populations via a matching grant program. The first submission deadline is April 4, but they require registration by March 22.
For more details about eligibility and submission requirements, please visit their website.