diff --git a/src/backends/gr.jl b/src/backends/gr.jl
index d879c006..94591552 100644
--- a/src/backends/gr.jl
+++ b/src/backends/gr.jl
@@ -1845,8 +1845,10 @@ function gr_draw_surface(series, x, y, z, clims)
     if series[:seriestype] === :surface
         fillalpha = get_fillalpha(series)
         fillcolor = get_fillcolor(series)
-        if length(x) == length(y) == length(z)
-            x, y, z = GR.gridit(x, y, z, 200, 200)
+        # NOTE: setting nx = 0 or ny = 0 disables GR.gridit interpolation
+        nx, ny = get(e_kwargs, :nx, 200), get(e_kwargs, :ny, 200)
+        if length(x) == length(y) == length(z) && nx > 0 && ny > 0
+            x, y, z = GR.gridit(x, y, z, nx, ny)
         end
         d_opt = get(e_kwargs, :display_option, GR.OPTION_COLORED_MESH)
         if (!isnothing(fillalpha) && fillalpha < 1) || alpha(first(fillcolor)) < 1