Robert Downey Jr.

Sherlock Holmes

Jude Law

Dr. John Watson

Rachel McAdams

Irene Adler

Mark Strong

Lord Henry Blackwood

Eddie Marsan

Inspector Lestrade

Robert Maillet

Dredger

Geraldine James

Mrs. Hudson

Kelly Reilly

Mary Morstan

William Houston

Constable Clark

Hans Matheson

Lord Coward

James Fox

Sir Thomas Rotheram

William Hope

Ambassador Standish

Clive Russell

Captain Tanner

Oran Gurel

Reordan

David Garrick

McMurdo

Ky Discala

Maid

Andrew Brooke

Guard Captain

Tom Watt

Carriage Driver

John Kearney

Carriage Driver

Sebastian Abineri

Coach Driver

Jonathan Gabriel Robbins

Guard

James A. Stephens

Captain Philips

Terence Taplin

Groundskeeper

Bronagh Gallagher

Palm Reader

Joe Egan

Big Man

Jefferson Hall

Young Guard

Miles Jupp

Waiter

Marn Davies

Police Officer

Andrew Greenough

Prison Guard

Ned Dennehy

Man with Roses

Martin Ewens

Removable Man

James Greene

Governor

David Emmings

Grave Policeman

Ben Cartwright

Grave Policeman

Chris Sunley

Grave Policeman

Michael Jenn

Preacher

Timothy O'Hara

Porter / Smith

Guy Williams

Golden Dawn Envoy

Peter Miles

Thug

Rocco Ritchie

Boy in the Street (uncredited)