According to the Hollywood Reporter, Wiig will be joined by a bevy of other funny folk including Andy Samberg, Penny Marshall, and '30 Rock' star Jack McBrayer.
Tim Robbins and Amber Tamblyn will also show up this year.
'Portlandia' stars 'Saturday Night Live' actor Armisen and Sleater-Kinney singer Carrie Brownstein. Set in the Pacific northwest, the two play a variety of characters, in addition to co-writing the episodes.
Season 1 featured appearances by Aubrey Plaza, Selma Blair and Steve Buscemi, among other big names.
'Portlandia' Season 2 premieres Mon., Jan. 9, 10PM ET on IFC