Who is no. 1 direct selling?
In direct selling (a distinct category from marketing agencies — think MLM, party plan, network marketing), Amway consistently ranks as the #1 direct-selling company globally by revenue, followed by Natura & Co, Herbalife, Vorwerk, and Nu Skin. This is off-topic for the growth-services directory but appears in "marketing agency" search results due to ambiguity.
Why this matters
This question shows up regularly in Google's People Also Ask for the "marketing agency" query, which is a signal that buyers in this space are asking it constantly during their research phase. The answer above is written from The Wall's editorial position — we index 2,286 verified US growth-services vendors across 10 pillars and see how these questions map to actual buying decisions.
If you're evaluating vendors in this category, the Marketing pillar page has the full US firm list with rates, team sizes, and headquarters filters.