The Second League of Armed Neutrality or the League of the North is an alliance of the north European naval powers Denmark–Norway, Prussia, Sweden and Russia.
It occurs between 1800 and 1801 during the War of the Second Coalition and is initiated by Paul I of Russia.
It is a revival of the First League of Armed Neutrality, which had been quite successful during the American War of Independence in isolating Britain and resisting attempts to interfere with their shipping, but the Second League is less successful than the First.