The Northeastern Luzon languages is a primary subgroup of the Northern Luzon languages, proposed by Robinson & Lobel (2013) based on historical phonology, functors, and lexicon.
^Robinson, Laura C. and Jason William Lobel (2013). "The Northeastern Luzon Subgroup of Philippine Languages." Oceanic Linguistics 52.1 (2013): 125-168. JSTOR43286764.