The best replacement for walnut is pecan.

The best alternatives to walnut are rated as following:
★★★★★  pecan
★★★★★  oak
★★★★  mahogany
★★  almond
★★  cherry
★★  maple
★★  corn cob media
★  black walnut
★  maple cutting board
★  cherry wood
★  english walnut
★  black walnut wood
★  teak
★  maple wood
★  rosewood
  walnut
  hickory
  cashew
  brazilian teak
  dark walnut
  diamond bar
  birch
  wenge
  butternut
  jacobean stain
  american walnut
  corn cob
  hazelnut
  beech k31
  pistachio
  olentangy

Your alternative for walnut is not listed? Suggest!
Speaking about walnut, one probably shouldn't forget about wormwood.

Other search terms related to walnut and their ratings are:
★★★★★ wormwood
You have in mind a companion for walnut and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of walnut in all years. Click on graph for more.
walnut
pecan
oak