- Sebastian Pauli (TU Berlin)
- Comp. number theory
- 11th Jan 2001 to 1st Mar 2001
- 3rd Mar 2003 to 4th Apr 2003
- 24th Mar 2005 to 6th May 2005
- Roman Pearce (CECM / Simon Fraser University)
- Comp. algebra
- 18th May 2013 to 22nd Jun 2013
- Lancelot Pecquet (INRIA, France)
- Coding Theory
- 1st Jun 1996 to 1st Sep 1996
- 15th Oct 1999 to 11th Nov 1999
- Janka Pilnikova (RISC, Linz)
- Algebraic Geometry
- 28th Aug 2004 to 27th Sep 2004
- Michael Pohst (TU Berlin)
- Number Theory
- 30th Jan 2000 to 5th Mar 2000
- 9th Oct 2003 to 9th Nov 2003
- 7th Feb 2008 to 1st Mar 2008
- 10th Feb 2010 to 10th Mar 2010
- Andrea Previtali (Como)
- Representation Theory
- 1st Oct 2007 to 28th Feb 2008
- Anthony Pye (QMUL)
- Comp. group theory
- 1st Jun 1996 to 1st Aug 1996
