Similar to a wordmark, a lettermark is a wholly typographic mark, usually involving initials or abbreviations. Monograms and anagrams are lettermarks. The representation of the letter(s) essentially become a symbol of the company.

You should consider a lettermark logotype only when:

• Your initials translate graphically better than your actual name.
• You need to link subsidiaries to the parent and can't easily use the name.
• You can afford to teach the public what the lettermark means.