Andy Sugden (also Hopwood) is a fictional character from the British ITV soap opera, Emmerdale, played by Kelvin Fletcher. He made his first on-screen appearance during the episode first broadcast in the United Kingdom on 4 July 1996. Andy was initially introduced as the foster son of Jack Sugden (Clive Hornby) and Sarah Sugden (Alyson Spiro), before formally being adopted into the Sugden family.

Appearing for 20 years, Andy emerged as one of the longest-serving characters in the programme's history. Across his tenure, his major storylines included accidentally causing the death of Sarah in a barn fire, a bitter feud with his adoptive brother Robert (Karl Davies/Ryan Hawley) and being framed for attempted murder which culminates in him fleeing the village. He was twice married to Katie Addyman (Sammy Winward), and engaged in domestic abuse towards his second wife Jo Stiles (Roxanne Pallet). A brief fling with Debbie Dingle (Charley Webb) resulted in the birth of his daughter Sarah (Sophia Amber Moore), before their son Jack (Louis Webster/Seth Ball) is born to create a bone marrow donor for Sarah after she is diagnosed with fanconi anaemia.

Fletcher has received widespread critical acclaim for his performance as Andy, winning multiple awards and nominations for his role. Particularly, the character's more emotive and challenging storylines have earned Fletcher praise for his portrayal whereas Andy was considered one of the most popular soap opera characters throughout his tenure. Fletcher stepped down from the role to pursue new challenges and his final scenes aired on 16 August 2016.

Fletcher successfully auditioned for the role of Andy Hopwood, described as a young tearaway and friend of established character Robert Sugden (Christopher Smith). The character was initially scripted to appear in three episodes though Fletcher impressed producers with his performance and was offered a long-term contract. Fletcher had previously auditioned for the role of Jamie Armstrong in fellow ITV soap opera Coronation Street though lost out to Joe Gilgun before being invited to audition for Emmerdale a year later. Reflecting on this during his podcast Off Script, Fletcher said: "I once auditioned for Corrie. It was actually for a little boy called Jamie who Jack Duckworth took under his wing, and I was down to the last two with Joe Gilgun. He obviously got the role... A year later I ended up in Emmerdale and the rest is history".

Andy arrives in Emmerdale and is fostered by Jack (Clive Hornby) and Sarah Sugden (Alyson Spiro), but finds it difficult to settle with the Sugden family. While on-site at a quarry, his foot lodges on a rock and gets trapped, forcing Jack to rescue him. When his father, Billy Hopwood (David Crellin), visits Emmerdale, Andy is persuaded to move into a caravan with him and disown the Sugdens. Billy breaks his promise to change and returns to committing petty crimes, up to the point where he robs the local post office and ends up killing its owner – Vic Windsor (Alun Lewis). In light of Vic's death and the post office incident, Billy is arrested and Andy moves back in with the Sugdens.

By then, Andy has grown close with his Jack and Sarah's young son Robert (Christopher Smith). This continues as the pair grow concerned when Jack and Sarah begin arguing over the farm. Sarah is annoyed with Jack for keeping Andy and off school to work on the farm. The subsequent discovery that Sarah is having an affair with Richie Carter (Glenn Lamont) causes the family to break up. Jack is awarded custody of Robert while Sarah is awarded custody of Robert's little sister Victoria (Hannah Midgley). Andy decides to stay with Jack. When the farm faces financial ruin, Andy decides to set fire to the barn for the insurance payout. However, Sarah and Richie are in the barn; the fire ends up killing Sarah and putting Richie in hospital. Richie blames Jack for the fire, but withdraws his statement to protect Andy.

Andy soon begins dating Katie Addyman (Sammy Winward), and goes to a nightclub with her along with other local residents; Eve Jenson (Raine Davison), Marc Reynolds (Anthony Lewis), Ollie Reynolds (Vicky Binns), and Donna Windsor (Verity Rushworth). Also involved on the trip is Robert (now Karl Davies), who has now resented Andy after learning the truth about how their mother died. When the group miss the bus, they steal a car and accidentally kill their headteacher Barbara Strickland (Alex Hall) along the way back to the village. They attempt to cover up their crime and burn the car. After living with guilt, the group confess and everyone apart from Marc – who was driving – is given community service. Katie's father Brian (Martin Reeve) disapproves of Andy and resolves to split them up. They decide to have a baby in an attempt to change his mind, but when Brian learns that Katie is pregnant, he sends her to live with her mother. She returns and moves in with Andy, but has a miscarriage. Despite this, she and Andy start planning their wedding. Katie, however, feels neglected by Andy working long hours and turns to Robert for excitement. Their affair is discovered by Victoria, as well as Andy's half-brother Daz Eden. However, Andy refuses to believe Daz and puts him into care – while Robert threatens Victoria into staying quiet until Jack eventually discovers the affairs. When the marriage fails, Katie and Robert admit their affair. Andy tries to shoot Robert, but hits Jack by mistake. He initially disowns Andy, but the pair are eventually reconciled after recounting that Robert and Kate are to blame due to their betrayal.

When Das returns, Daz invites him and his friend Debbie Dingle (Charley Webb) to move in – needing the rent money. Debbie is attracted to Andy and loses her virginity to him. They start dating secretly, but then her family learn about this and Andy is confronted by Debbie's father Cain (Jeff Hordley) about the revelation. He later ends the relationship with Debbie after Cain threatens to lead Daz into criminal activities unless Andy leaves Debbie alone. Andy briefly dates Libby Charles (Ty Glaser) afterwards, but then discovers that Debbie has given birth to his baby – Sarah. He and Debbie soon break up, agreeing to keep in contact, but Debbie's decision to give Sarah to Emily Kirk (Kate McGregor) upsets Andy. Things get worse when Katie discover that Andy is Sarah's father. When she is involved in a car accident, Andy breaks up with Debbie to get back with her. They soon resume their relationship, annoying the Sugdens, but Andy later has an affair with Kate's new friend Jo Stiles (Roxanne Pallett). When he realises that he is using Jo to get revenge for Katie and Robert's affair, she manipulates him into continuing the affair. Emily returns Sarah to Andy; when Debbie finds out, she gives Andy custody.