545 may refer to:

• the year 545 AD
• the year 545 BC
• 545, a 2002 live album by Chris Tomlin
• a highway numbered 545 (see list)

• Father Hennepin
• Father Hennepin (Band)
• Father Hennepin (band)
• Father Henry Carr Catholic Secondary School
• Father Hidalgo
• Father Hilary's Holiday
• Father Hofbauer
• Father honti
• Fatherhood/Motherhood
• Fatherhood USA
• Fathering
• Father-in-law
• Father Isaac Jogues
• Father Is a Bachelor
• Father Ivan Deubner
• Father Jack (disambiguation)
• Father Jacques Marquette SJ
• Father James Chesney
• Father James Devlin
• Father James Edmund Groppi
• Father J. Anchieta
• Father jay
• Father Jealous Divine
• Father Jerzy Popieluszko
• Father Jim Chesney