The 18-year-old will not be able to rely on the support of his parents in his first major tournament appearance, after they followed Foreign and Commonwealth Office (FCO) advice.
"It’s a shame for some members of the squad that their families feel they can’t go" - Joleon Lescott
Manchester City and England defender Joleon Lescott expressed his disappointment over the situation which is affecting his team-mates.
"With my family, it’s not the same as with Theo’s and Alex’s families - that they don’t feel they can travel," Lescott told reporters.
"We [my family] just haven’t spoken about them coming and it would have been the same if I had been in South Africa [at the 2010 World Cup].
"It’s a shame for some members of the squad that their families feel they can’t go."
Oxlade-Chamberlain is yet to make his senior debut for England and was a surprise selection by manager Roy Hodgson following his breakthrough at Arsenal.