Dolphins Primary LogoDolphins Alternate LogoDolphins Wordmark LogoDolphins Team MerchEstablished 1966 City Miami League History 1970 – Present / National Football League 1966 – 1969 / American Football League Team History 1966 – Present / Miami Dolphins Nickname Dolphins – The Miami Dolphins are among the most popular National Football League (NFL) teams. But did you know that their nickname, “Dolphins,” …