"Windowlicker" is a song by British electronic musician Aphex Twin, released on 22 March 1999 as a single containing two B-side tracks by Warp Records.

Track List.

1. "Windowlicker" [6:07]
2. "ΔM_i^-1 = -α Σ_n=1^N D_i[n] { Σ_j∈C⦍i⦐ F_ji [n-1] + Fext_i [n^-1] }" (commonly referred to as "[Equation]" or "[Formula]") [5:43]
3. "Nannou" [4:13]