Wedding

Weddings were ceremonies in which two people were married. The Tenth Doctor once told Sally Sparrow that due to time-travel he was "rubbish at weddings, especially my own." (TV: Blink)

The Doctor
Over the course of his life the Doctor was married more than once.

In 1782, a wedding ceremony was held between the Eighth Doctor and Scarlette. (PROSE: The Adventuress of Henrietta Street)

On 22 April 2011 of an alternate timeline, the wedding of River Song and the Eleventh Doctor was held on top of the Great Pyramid of Giza. (TV: The Wedding of River Song)

Weddings of the Doctor's companions
In 1986, the Ninth Doctor and Rose Tyler attended the wedding of Pete Tyler and Jackie Prentice. A year later, Pete and Jackie attended the wedding of Stuart Hoskins and Sarah Clark, during which Pete was hit by a car outside the church and killed. (TV: Father's Day)

The Seventh Doctor originally did not attend the wedding of Alistair Gordon Lethbridge-Stewart and Doris, but later changed time to a minor extent so that he did attend it. (PROSE: A Romantic Evening)

On 29 October 2009, the wedding of Sarah Jane Smith and Peter Dalton was revealed to be part of the Trickster's scheme and averted with help from the Tenth Doctor. (TV: The Wedding of Sarah Jane Smith)

In April 2010, the Seventh Doctor assembled the guests and musicians for the wedding of Bernice Summerfield and Jason Kane in Cheldon Bonniface. (PROSE: Happy Endings)

On 26 June of that year, the Eleventh Doctor attended the wedding of Amy Pond and Rory Williams. (TV: The Big Bang)

Amy Pond later accidently married Henry VIII on her anniversary with her proper husband, Rory Williams. Her excuse was that she just heard someone talking and said "yes." (TV: The Power of Three)

The Fourth Doctor interrupted the wedding of Romana and Count Grendel on Tara. (TV: The Androids of Tara)

In 3999, the Eighth Doctor attended the wedding of Stacy Townsend and Ssard on Micawber's World. (PROSE: Placebo Effect)

Donna Noble
On 24 December 2007, the wedding of Donna Noble and Lance Bennett was interrupted when she was transported to the Tenth Doctor's TARDIS. (TV: The Runaway Bride)

Donna later married Lee McAvoy while in CAL's virtual world. (TV: Forest of the Dead)

After Donna stopped travelling with the Doctor, she got married again in spring of 2010, this time to Shaun Temple. The Tenth Doctor secretly attended this wedding. The first and last time the Doctor saw Donna, she was in a wedding dress. (TV: The End of Time)

Other
In 2009, the wedding of Gwen Cooper and Rhys Williams was complicated by the activities of a Nostrovite. (TV: Something Borrowed)