Yes, there are. This is a great question. I hadn't really thought about it until now, because I don't feel that way and also believe the community adds zest to the world! But, I immediately thought of circumstances where a non religious person could take issue with LGBTQ people.
People can be uncomfortable with things they don't understand or can't relate to. This can be true for anything - people who are heavily tattooed, skinheads, punks, goths etc... Anyone who looks different or is into things that depart from their personal sense of normal. There are some who feel a disdain for the homeless, as it's hard for them to understand how anyone could get so far gone. I feel great compassion, but I know these views exist, as I've been surprised by them, repeatedly. It's the risk you take when you speak to people.

None of these reactions come from biblical origins, but the judgement and discomfort still exist. I think for some, LGBTQ are among those things they might not understand.

Perhaps it's because I live in liberal So. California....but, I don't really know ANYONE who is homophobic. It seems to me that atheists are so sensitive to how public opinion can be hurtful and damaging that they tend to identify with anyone who's outside the social ''norm." I need to say, though, that the FEW genuinely religious people I know are very accepting and empathetic to gays. So, it's not all religious people...just those who are probably attracted to same-gender relations and can't admit it to themselves or to others.

I can't speak for others, but if someone is in love, go for it.

I feel like most people who aren’t open minded have the problems with the LGBT community. Regardless of religious beliefs. This persons Sexual preference may make someone else insecure and uncomfortable. I’m for loving anyone you want but some people worry more about others than themselves.

Its like 95 % religious fools and few old fashioned atheists.

No I used to be to avoided being put in that group but then I grew up and started meeting people not like me and realized it is fear that pushes hate. I had step brother who was gay, brother in law who is gay. Lesbains never bothered me. I have had facebook freinds who are gay lebians, and transgender. Religions are about controling people! They want you to think there is something wrong with them their favorite word is sin! All the born in sin and sin is this and that is all crap! I was an Atheist long before this part of my life. I call my self a socialist, hippy , Atheist. The hippy part is we are all one race and treat everyone as you would like to be treated. When you get to know others who are not like you you learn not alot of differences. You do not catch gayness from others you do learn acceptance and tolelrance from others which is a good thing.

Hatred of gay people has it's roots in any religion, ideology, political movement or other organisation that relies in the long term on children being raised to be life long members, until recently gay people did not have children, therefore were not people farmers for these control freaks, so making them miserable and frightening people in to leading a life of lies was good for the cause.

I think that homophobia may stem from thinking about how homosexuals interact.

Religion is not a necessary ingredient for homophobia, so it is certainly possible to be areligious AND homophobic.

However, religion provides rationalizations and cover for homophobia (and many other societal harms) because you can always claim god told you it's a Bad Thing, which exempts you from having to actually substantiate your truth claims.

Homosexuality, bisexuality, and other forms of sexuality are as old as humanity.
Among the ancients, they were really not taboos. They were just accepted as
part of the collective. Granted, there have always been those who made fun of
others who were different, but never to the level it's become. It wasn't until the advent of the judeo/christo religions that sexuality in all it's forms was demonized.
Another reason to be an anti-theist.
Religion poisons everything it touches.
Religion has poisoned humanity.

I'm dismayed to say, but there were many people on this site who ran to defend the homophobic cake shop owner.

Never been a problem for me. Good parenting.

It's mostly believers, but I personally know a couple people who aren't at all religious, yet still can't handle the LGBT movement because it makes them so uncomfortable. In an effort to relate I tell them I'm not all that comfortable either, the thought of a man "with" a man is very uncomfortable for me. But that's MY (my friends, really) problem, it shouldn't be theirs. It doesn't make them any less human or equal - their hearts and minds are as good as ours - and that's the only thing that should matter.