John Ellicott may refer to:

• John Ellicott (clockmaker) (1706–1772), English clock and watchmaker
• John Ellicott (miller) (1739–1794), American miller

• C6H4(NH2)COOH
• C6H4O2
• C6H4O3
• C6H4O4
• C6H4O6
• C6H4O8
• C6H4(OH)
• C6H4(OH)2
• C6H4(OH)COOH
• -C6H5
• (C6H5)2
• C6H5BO2
• C6H5Br
• C6H5CF3
• C6H5CH2N(CH3)2
• C6H5CH2NH2
• C6H5CH2OH
• C6H5CH(CH3)NH2
• C6H5CHCHC(O)CH3
• C6H5Cl
• C6H5ClN2
• C6H5ClO
• C6H5CN
• (C6H5CO)2
• C6H5COCl