The Lansing-Ishii Agreement (石井・ランシング協定, Ishii-Ranshingu Kyōtei) was a diplomatic note signed between the United States and Japan on 2 November 1917 over their disputes with regards to China.
Lansing-Ishii-aftalen (japansk: 石井・ランシング協定; Ishii-Ranshingu Kyōtei) var en diplomatisk note mellem USA og det Japan den 2. november 1917 vedrørende uoverensstemmelser om forholdene i Kina.