The 90-year-old accuses the firms of spreading fake articles and tagging their websites with his name to make it look like he had backed their products.
Nearly 20 firms are named in the suits, accused of trademark infringement and defamation among other violations.
One firm, Sera Labs, said it had stopped the fake ads “immediately”.
All of the companies sell goods with CBD, an extract from the marijuana plant that does not have psychoactive properties. It is used in products such as creams, oils and food.
However lawyers for Mr Eastwood – who has starred in films such as Dirty Harry, as well as directing features including Mystic River – said he “does not have and never has had” any association with CBD. Read the full story HERE