Sir Ian

Sir Ian may refer to:


 * Sir Ian Anstruther, writer
 * Sir Ian Blair, Head of the Metropolitan Police Service
 * Sir Ian Botham, cricketer
 * Sir Ian Campbell-Gray, soldier
 * Sir Ian Hamilton, general
 * Sir Ian Holm, actor
 * Sir Ian Kennedy, lawyer
 * Sir Ian Kershaw, historian
 * Sir Ian Lloyd, politician
 * Sir Ian McKellen, actor
 * Sir Ian McLennan, businessman
 * Sir Ian Malcolm, politician
 * Sir Ian Potter, businessman
 * Sir Ian Wrigglesworth, politician