2016–17 Isthmian League

The 2016–17 season was the 102nd season of the Isthmian League, which is an English football competition featuring semi-professional and amateur clubs from London, East and South East England. Also, it was the eleventh season for the current incarnations of Division One North and Division One South. The league constitution was announced on 12 May 2016 and concluded on 1 May 2017.

Premier Division
Farnborough were required by the Isthmian League to pay their creditors in full before the league's 2016 AGM. As this was not fulfilled, the league relegated the club from the Premier Division to Step 4, and Burgess Hill Town were reprieved from relegation.

The Premier Division consisted of 24 clubs: 18 clubs from the previous season, and six new clubs:
 * AFC Sudbury, promoted as champions of Division One North
 * Folkestone Invicta, promoted as champions of Division One South
 * Harlow Town, play-off winners in Division One North
 * Havant & Waterlooville, relegated from National League South
 * Lowestoft Town, relegated from National League North
 * Worthing, play-off winners in Division One South

Havant & Waterlooville were pronounced champions of the Premier Division on 22 April 2017, and returned to the National League at the first attempt along with play-off winners Bognor Regis Town, who spent eight years in the Isthmian League after relegation from Conference South in 2009. AFC Sudbury, who reached Premier Division for the first time in their history relegated back to Division One North along with Canvey Island and Grays Athletic. Harrow Borough were reprieved from relegation after Worcester City, who relegated from National League North took a further voluntary demotion to the Midland League for financial reasons.

Division One North
Division One North consisted of 24 clubs: 19 clubs from the previous season, and five new clubs:
 * Bowers & Pitsea, promoted from the Essex Senior League
 * Brentwood Town, relegated from the Premier Division
 * Norwich United, promoted from the Eastern Counties League
 * VCD Athletic, relegated from the Premier Division
 * Ware, transferred from Southern League Division One Central

Brightlingsea Regent were pronounced champions of Division One North on 8 April 2017, and promoted with play-off Thurrock. Wroxham, who were reprieved from relegation twice in three previous seasons were finally relegated along with Great Wakering Rovers. Ware get a reprieve after Worcester City took a voluntary demotion from National League to Midland League.

Division One South
Division One South consisted of 24 clubs: 19 clubs from the previous season, and five new clubs:
 * Cray Wanderers, transferred from Division One North
 * Godalming Town, transferred from Southern Football League Division One Central
 * Greenwich Borough, promoted from Southern Counties East League
 * Horsham, promoted from the Southern Combination League
 * Lewes, relegated from the Premier Division

Tooting & Mitcham United were pronounced champions of Division One South on 22 April 2017, and returned to the Premier Division after five seasons in Division One South along with play-off winners Dorking Wanderers who reached this level for the first time in their history.

League Cup
The 2016–17 Alan Turvey Trophy sponsored by Robert Dyas (formerly the Isthmian League Cup) is the 43rd season of the Alan Turvey Trophy, the cup competition of the whole Isthmian League.

Calendar
The Isthmian League Cup was voluntary this season, ten clubs decided not to take part in the competition:


 * Bognor Regis Town
 * Cray Wanderers
 * Dereham Town
 * Havant & Waterlooville
 * Guernsey


 * Lewes
 * Norwich United
 * Phoenix Sports
 * Thurrock
 * Wroxham

First round
Sixty clubs participated in the First round, while two clubs received a bye to the Second round:
 * Bury Town
 * Dorking Wanderers

Second round
Thirty clubs to have made it through the First round were entered into the draw with two clubs who get a bye, making thirty-two teams.