No way, bitcoin is not an altcoin.
Bitcoin cash, bitcoin gold, bitcoin dark, bitcoin plus are the altcoins.
Coins like Ethereum, Litecoin, Ripple, Dash, Monero, and Bitconnect are also altcoins
Often people consider bitcoin as altcoins but I think they must need to update their information and once they get to know about it, they will be astonished to see such confusions just rendering out of their mind. Bitcoin can never be called as altcoin rather awareness campaigns must be put in action to acknowledge people what are \the differences actually bitcoin and altcoins have.