In conversations involving more than two people, most utterances are intended to be understood not only by the people being addressed, but also by the others. These utterances cannot be accounted for in current theories of speech acts unless several basic changes are made. In our proposal, the speaker performs two types of illocutionary act with each utterance. One is the traditional kind, such as an assertion, promise, or apology; this is directed at the addressees. The other, called an informative, is directed at all the participants in the conversation—the addressees and third parties alike. It is intended to inform all of them jointly of the assertion, promise, or apology being directed at the addressees. We present evidence that every traditional illocutionary act is performed by means of an informative.